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Finding the Fourth Proportional to 387,359.78, 581,073.12 and 106,877.03

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Solution

The fourth proportional to 387,359.78, 581,073.12 and 106,877.03 is: 160,324.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,359.78 : 581,073.12 = 106,877.03 : x
  2. Step 2: Convert to fraction form
    387,359.78/581,073.12 = 106,877.03/x
  3. Step 3: Cross multiply
    387,359.78x = 581,073.12 × 106,877.03
  4. Step 4: Simplify right side
    387,359.78x = 62,103,369,278.43
  5. Step 5: Solve for x
    x = 62,103,369,278.43/387,359.78
  6. Step 6: Final answer
    x = 160,324.77

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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.