Finding the Fourth Proportional to 426,737.57, 639,965.64 and 142,349.75
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Solution
The fourth proportional to 426,737.57, 639,965.64 and 142,349.75 is: 213,477.69
Step by Step Solution
- Step 1: Write the proportion equation
426,737.57 : 639,965.64 = 142,349.75 : x - Step 2: Convert to fraction form
426,737.57/639,965.64 = 142,349.75/x - Step 3: Cross multiply
426,737.57x = 639,965.64 × 142,349.75 - Step 4: Simplify right side
426,737.57x = 91,098,948,862.59 - Step 5: Solve for x
x = 91,098,948,862.59/426,737.57 - Step 6: Final answer
x = 213,477.69
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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.