Finding the Fourth Proportional to 190,853.70, 286,207.65 and 57,689.70
Calculator
Solution
The fourth proportional to 190,853.70, 286,207.65 and 57,689.70 is: 86,512.51
Step by Step Solution
- Step 1: Write the proportion equation
190,853.70 : 286,207.65 = 57,689.70 : x - Step 2: Convert to fraction form
190,853.70/286,207.65 = 57,689.70/x - Step 3: Cross multiply
190,853.70x = 286,207.65 × 57,689.70 - Step 4: Simplify right side
190,853.70x = 16,511,233,466.21 - Step 5: Solve for x
x = 16,511,233,466.21/190,853.70 - Step 6: Final answer
x = 86,512.51
Related Problems
Find fourth proportional to 95,426.85, 143,103.83 and 28,844.85
Half scale
Find fourth proportional to 381,707.40, 572,415.30 and 115,379.40
Double scale
Find fourth proportional to 190,854.70, 286,209.15 and 57,690.70
Similar ratio
Find fourth proportional to 286,280.55, 429,311.48 and 86,534.55
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.