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Finding the Fourth Proportional to 258,624.72, 387,937.08 and 71,636.28

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Solution

The fourth proportional to 258,624.72, 387,937.08 and 71,636.28 is: 107,454.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,624.72 : 387,937.08 = 71,636.28 : x
  2. Step 2: Convert to fraction form
    258,624.72/387,937.08 = 71,636.28/x
  3. Step 3: Cross multiply
    258,624.72x = 387,937.08 × 71,636.28
  4. Step 4: Simplify right side
    258,624.72x = 27,790,369,285.26
  5. Step 5: Solve for x
    x = 27,790,369,285.26/258,624.72
  6. Step 6: Final answer
    x = 107,454.42

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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.