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Finding the Fourth Proportional to 423,353.67, 634,964.90 and 123,763.83

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Solution

The fourth proportional to 423,353.67, 634,964.90 and 123,763.83 is: 185,626.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,353.67 : 634,964.90 = 123,763.83 : x
  2. Step 2: Convert to fraction form
    423,353.67/634,964.90 = 123,763.83/x
  3. Step 3: Cross multiply
    423,353.67x = 634,964.90 × 123,763.83
  4. Step 4: Simplify right side
    423,353.67x = 78,585,687,320.75
  5. Step 5: Solve for x
    x = 78,585,687,320.75/423,353.67
  6. Step 6: Final answer
    x = 185,626.56

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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.