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Finding the Fourth Proportional to 423,729.30, 635,594.96 and 103,882.57

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Solution

The fourth proportional to 423,729.30, 635,594.96 and 103,882.57 is: 155,824.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,729.30 : 635,594.96 = 103,882.57 : x
  2. Step 2: Convert to fraction form
    423,729.30/635,594.96 = 103,882.57/x
  3. Step 3: Cross multiply
    423,729.30x = 635,594.96 × 103,882.57
  4. Step 4: Simplify right side
    423,729.30x = 66,027,237,923.85
  5. Step 5: Solve for x
    x = 66,027,237,923.85/423,729.30
  6. Step 6: Final answer
    x = 155,824.10

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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.