Finding the Fourth Proportional to 199,590,920.40, 299,386,380.60 and 97,420,501.20
Calculator
Solution
The fourth proportional to 199,590,920.40, 299,386,380.60 and 97,420,501.20 is: 146,130,751.80
Step by Step Solution
- Step 1: Write the proportion equation
199,590,920.40 : 299,386,380.60 = 97,420,501.20 : x - Step 2: Convert to fraction form
199,590,920.40/299,386,380.60 = 97,420,501.20/x - Step 3: Cross multiply
199,590,920.40x = 299,386,380.60 × 97,420,501.20 - Step 4: Simplify right side
199,590,920.40x = 29,166,371,250,505,960 - Step 5: Solve for x
x = 29,166,371,250,505,960/199,590,920.40 - Step 6: Final answer
x = 146,130,751.80
Related Problems
Find fourth proportional to 99,795,460.20, 149,693,190.30 and 48,710,250.60
Half scale
Find fourth proportional to 399,181,840.80, 598,772,761.20 and 194,841,002.40
Double scale
Find fourth proportional to 199,590,921.40, 299,386,382.10 and 97,420,502.20
Similar ratio
Find fourth proportional to 299,386,380.60, 449,079,570.90 and 146,130,751.80
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.