Finding the Fourth Proportional to 318,919,135.20, 478,080,104.40 and 249,793,605.60
Calculator
Solution
The fourth proportional to 318,919,135.20, 478,080,104.40 and 249,793,605.60 is: 374,456,531.02
Step by Step Solution
- Step 1: Write the proportion equation
318,919,135.20 : 478,080,104.40 = 249,793,605.60 : x - Step 2: Convert to fraction form
318,919,135.20/478,080,104.40 = 249,793,605.60/x - Step 3: Cross multiply
318,919,135.20x = 478,080,104.40 × 249,793,605.60 - Step 4: Simplify right side
318,919,135.20x = 119,421,353,043,700,416 - Step 5: Solve for x
x = 119,421,353,043,700,416/318,919,135.20 - Step 6: Final answer
x = 374,456,531.02
Related Problems
Find fourth proportional to 159,459,567.60, 239,040,052.20 and 124,896,802.80
Half scale
Find fourth proportional to 637,838,270.40, 956,160,208.80 and 499,587,211.20
Double scale
Find fourth proportional to 318,919,136.20, 478,080,105.90 and 249,793,606.60
Similar ratio
Find fourth proportional to 478,378,702.80, 717,120,156.60 and 374,690,408.40
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.