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Finding the Fourth Proportional to 572,083.80, 858,125.70 and 145,618.80

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Solution

The fourth proportional to 572,083.80, 858,125.70 and 145,618.80 is: 218,428.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,083.80 : 858,125.70 = 145,618.80 : x
  2. Step 2: Convert to fraction form
    572,083.80/858,125.70 = 145,618.80/x
  3. Step 3: Cross multiply
    572,083.80x = 858,125.70 × 145,618.80
  4. Step 4: Simplify right side
    572,083.80x = 124,959,234,683.16
  5. Step 5: Solve for x
    x = 124,959,234,683.16/572,083.80
  6. Step 6: Final answer
    x = 218,428.20

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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.