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Finding the Fourth Proportional to 437,424.60, 656,136.90 and 156,905.40

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Solution

The fourth proportional to 437,424.60, 656,136.90 and 156,905.40 is: 235,358.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,424.60 : 656,136.90 = 156,905.40 : x
  2. Step 2: Convert to fraction form
    437,424.60/656,136.90 = 156,905.40/x
  3. Step 3: Cross multiply
    437,424.60x = 656,136.90 × 156,905.40
  4. Step 4: Simplify right side
    437,424.60x = 102,951,422,749.26
  5. Step 5: Solve for x
    x = 102,951,422,749.26/437,424.60
  6. Step 6: Final answer
    x = 235,358.10

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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.