Finding the Fourth Proportional to 385,489.10, 578,053.68 and 145,418.02
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Solution
The fourth proportional to 385,489.10, 578,053.68 and 145,418.02 is: 218,059.14
Step by Step Solution
- Step 1: Write the proportion equation
385,489.10 : 578,053.68 = 145,418.02 : x - Step 2: Convert to fraction form
385,489.10/578,053.68 = 145,418.02/x - Step 3: Cross multiply
385,489.10x = 578,053.68 × 145,418.02 - Step 4: Simplify right side
385,489.10x = 84,059,421,599.31 - Step 5: Solve for x
x = 84,059,421,599.31/385,489.10 - Step 6: Final answer
x = 218,059.14
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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.