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Finding the Fourth Proportional to 258,115.60, 387,179.88 and 124,971.04

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Solution

The fourth proportional to 258,115.60, 387,179.88 and 124,971.04 is: 187,459.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,115.60 : 387,179.88 = 124,971.04 : x
  2. Step 2: Convert to fraction form
    258,115.60/387,179.88 = 124,971.04/x
  3. Step 3: Cross multiply
    258,115.60x = 387,179.88 × 124,971.04
  4. Step 4: Simplify right side
    258,115.60x = 48,386,272,270.68
  5. Step 5: Solve for x
    x = 48,386,272,270.68/258,115.60
  6. Step 6: Final answer
    x = 187,459.70

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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.