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Finding the Fourth Proportional to 387,545.31, 581,328.90 and 107,062.56

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Solution

The fourth proportional to 387,545.31, 581,328.90 and 107,062.56 is: 160,596.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,545.31 : 581,328.90 = 107,062.56 : x
  2. Step 2: Convert to fraction form
    387,545.31/581,328.90 = 107,062.56/x
  3. Step 3: Cross multiply
    387,545.31x = 581,328.90 × 107,062.56
  4. Step 4: Simplify right side
    387,545.31x = 62,238,560,235.98
  5. Step 5: Solve for x
    x = 62,238,560,235.98/387,545.31
  6. Step 6: Final answer
    x = 160,596.86

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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.