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Finding the Fourth Proportional to 258,589.47, 387,884.28 and 71,600.97

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Solution

The fourth proportional to 258,589.47, 387,884.28 and 71,600.97 is: 107,401.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,589.47 : 387,884.28 = 71,600.97 : x
  2. Step 2: Convert to fraction form
    258,589.47/387,884.28 = 71,600.97/x
  3. Step 3: Cross multiply
    258,589.47x = 387,884.28 × 71,600.97
  4. Step 4: Simplify right side
    258,589.47x = 27,772,890,695.75
  5. Step 5: Solve for x
    x = 27,772,890,695.75/258,589.47
  6. Step 6: Final answer
    x = 107,401.48

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1.5x scale

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.