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Finding the Fourth Proportional to 254,659.92, 381,752.45 and 86,062.35

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Solution

The fourth proportional to 254,659.92, 381,752.45 and 86,062.35 is: 129,013.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,659.92 : 381,752.45 = 86,062.35 : x
  2. Step 2: Convert to fraction form
    254,659.92/381,752.45 = 86,062.35/x
  3. Step 3: Cross multiply
    254,659.92x = 381,752.45 × 86,062.35
  4. Step 4: Simplify right side
    254,659.92x = 32,854,512,965.26
  5. Step 5: Solve for x
    x = 32,854,512,965.26/254,659.92
  6. Step 6: Final answer
    x = 129,013.29

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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.