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Finding the Fourth Proportional to 387,376.47, 581,098.19 and 106,893.72

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Solution

The fourth proportional to 387,376.47, 581,098.19 and 106,893.72 is: 160,349.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,376.47 : 581,098.19 = 106,893.72 : x
  2. Step 2: Convert to fraction form
    387,376.47/581,098.19 = 106,893.72/x
  3. Step 3: Cross multiply
    387,376.47x = 581,098.19 × 106,893.72
  4. Step 4: Simplify right side
    387,376.47x = 62,115,746,679.90
  5. Step 5: Solve for x
    x = 62,115,746,679.90/387,376.47
  6. Step 6: Final answer
    x = 160,349.82

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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.