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Finding the Fourth Proportional to 442,691.10, 663,962.36 and 122,875.47

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Solution

The fourth proportional to 442,691.10, 663,962.36 and 122,875.47 is: 184,292.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,691.10 : 663,962.36 = 122,875.47 : x
  2. Step 2: Convert to fraction form
    442,691.10/663,962.36 = 122,875.47/x
  3. Step 3: Cross multiply
    442,691.10x = 663,962.36 × 122,875.47
  4. Step 4: Simplify right side
    442,691.10x = 81,584,686,432.93
  5. Step 5: Solve for x
    x = 81,584,686,432.93/442,691.10
  6. Step 6: Final answer
    x = 184,292.58

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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.