Finding the Fourth Proportional to 429,902.31, 643,869.99 and 205,420.53
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Solution
The fourth proportional to 429,902.31, 643,869.99 and 205,420.53 is: 307,660.86
Step by Step Solution
- Step 1: Write the proportion equation
429,902.31 : 643,869.99 = 205,420.53 : x - Step 2: Convert to fraction form
429,902.31/643,869.99 = 205,420.53/x - Step 3: Cross multiply
429,902.31x = 643,869.99 × 205,420.53 - Step 4: Simplify right side
429,902.31x = 132,264,114,596.90 - Step 5: Solve for x
x = 132,264,114,596.90/429,902.31 - Step 6: Final answer
x = 307,660.86
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.