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Finding the Fourth Proportional to 371,856.60, 557,128.80 and 231,451.20

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Solution

The fourth proportional to 371,856.60, 557,128.80 and 231,451.20 is: 346,768.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,856.60 : 557,128.80 = 231,451.20 : x
  2. Step 2: Convert to fraction form
    371,856.60/557,128.80 = 231,451.20/x
  3. Step 3: Cross multiply
    371,856.60x = 557,128.80 × 231,451.20
  4. Step 4: Simplify right side
    371,856.60x = 128,948,129,314.56
  5. Step 5: Solve for x
    x = 128,948,129,314.56/371,856.60
  6. Step 6: Final answer
    x = 346,768.43

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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.