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Finding the Fourth Proportional to 442,876.60, 664,314.90 and 293,285.80

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Solution

The fourth proportional to 442,876.60, 664,314.90 and 293,285.80 is: 439,928.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,876.60 : 664,314.90 = 293,285.80 : x
  2. Step 2: Convert to fraction form
    442,876.60/664,314.90 = 293,285.80/x
  3. Step 3: Cross multiply
    442,876.60x = 664,314.90 × 293,285.80
  4. Step 4: Simplify right side
    442,876.60x = 194,834,126,898.42
  5. Step 5: Solve for x
    x = 194,834,126,898.42/442,876.60
  6. Step 6: Final answer
    x = 439,928.70

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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.