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Finding the Fourth Proportional to 258,598.92, 387,904.88 and 71,612.04

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Solution

The fourth proportional to 258,598.92, 387,904.88 and 71,612.04 is: 107,419.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,598.92 : 387,904.88 = 71,612.04 : x
  2. Step 2: Convert to fraction form
    258,598.92/387,904.88 = 71,612.04/x
  3. Step 3: Cross multiply
    258,598.92x = 387,904.88 × 71,612.04
  4. Step 4: Simplify right side
    258,598.92x = 27,778,659,782.76
  5. Step 5: Solve for x
    x = 27,778,659,782.76/258,598.92
  6. Step 6: Final answer
    x = 107,419.86

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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.