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Finding the Fourth Proportional to 442,948.40, 664,314.60 and 127,372.40

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Solution

The fourth proportional to 442,948.40, 664,314.60 and 127,372.40 is: 191,027.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,948.40 : 664,314.60 = 127,372.40 : x
  2. Step 2: Convert to fraction form
    442,948.40/664,314.60 = 127,372.40/x
  3. Step 3: Cross multiply
    442,948.40x = 664,314.60 × 127,372.40
  4. Step 4: Simplify right side
    442,948.40x = 84,615,344,957.04
  5. Step 5: Solve for x
    x = 84,615,344,957.04/442,948.40
  6. Step 6: Final answer
    x = 191,027.54

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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.