Finding the Fourth Proportional to 389,737.13, 537,415.74 and 338,309.15
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Solution
The fourth proportional to 389,737.13, 537,415.74 and 338,309.15 is: 466,500.75
Step by Step Solution
- Step 1: Write the proportion equation
389,737.13 : 537,415.74 = 338,309.15 : x - Step 2: Convert to fraction form
389,737.13/537,415.74 = 338,309.15/x - Step 3: Cross multiply
389,737.13x = 537,415.74 × 338,309.15 - Step 4: Simplify right side
389,737.13x = 181,812,659,508.94 - Step 5: Solve for x
x = 181,812,659,508.94/389,737.13 - Step 6: Final answer
x = 466,500.75
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.