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Finding the Fourth Proportional to 423,663.60, 635,494.87 and 108,120.52

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Solution

The fourth proportional to 423,663.60, 635,494.87 and 108,120.52 is: 162,180.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,663.60 : 635,494.87 = 108,120.52 : x
  2. Step 2: Convert to fraction form
    423,663.60/635,494.87 = 108,120.52/x
  3. Step 3: Cross multiply
    423,663.60x = 635,494.87 × 108,120.52
  4. Step 4: Simplify right side
    423,663.60x = 68,710,035,801.73
  5. Step 5: Solve for x
    x = 68,710,035,801.73/423,663.60
  6. Step 6: Final answer
    x = 162,180.64

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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.