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Finding the Fourth Proportional to 442,372.20, 662,246.10 and 292,781.40

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Solution

The fourth proportional to 442,372.20, 662,246.10 and 292,781.40 is: 438,303.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,372.20 : 662,246.10 = 292,781.40 : x
  2. Step 2: Convert to fraction form
    442,372.20/662,246.10 = 292,781.40/x
  3. Step 3: Cross multiply
    442,372.20x = 662,246.10 × 292,781.40
  4. Step 4: Simplify right side
    442,372.20x = 193,893,340,302.54
  5. Step 5: Solve for x
    x = 193,893,340,302.54/442,372.20
  6. Step 6: Final answer
    x = 438,303.63

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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.