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Finding the Fourth Proportional to 442,892.70, 664,339.05 and 307,590.30

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Solution

The fourth proportional to 442,892.70, 664,339.05 and 307,590.30 is: 461,385.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,892.70 : 664,339.05 = 307,590.30 : x
  2. Step 2: Convert to fraction form
    442,892.70/664,339.05 = 307,590.30/x
  3. Step 3: Cross multiply
    442,892.70x = 664,339.05 × 307,590.30
  4. Step 4: Simplify right side
    442,892.70x = 204,344,247,691.22
  5. Step 5: Solve for x
    x = 204,344,247,691.22/442,892.70
  6. Step 6: Final answer
    x = 461,385.45

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1.5x scale

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.