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Finding the Fourth Proportional to 534,439.80, 801,659.79 and 135,081.72

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Solution

The fourth proportional to 534,439.80, 801,659.79 and 135,081.72 is: 202,622.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    534,439.80 : 801,659.79 = 135,081.72 : x
  2. Step 2: Convert to fraction form
    534,439.80/801,659.79 = 135,081.72/x
  3. Step 3: Cross multiply
    534,439.80x = 801,659.79 × 135,081.72
  4. Step 4: Simplify right side
    534,439.80x = 108,289,583,288.04
  5. Step 5: Solve for x
    x = 108,289,583,288.04/534,439.80
  6. Step 6: Final answer
    x = 202,622.60

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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.