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Finding the Fourth Proportional to 288,760.39, 433,202.40 and 86,372.38

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Solution

The fourth proportional to 288,760.39, 433,202.40 and 86,372.38 is: 129,577.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,760.39 : 433,202.40 = 86,372.38 : x
  2. Step 2: Convert to fraction form
    288,760.39/433,202.40 = 86,372.38/x
  3. Step 3: Cross multiply
    288,760.39x = 433,202.40 × 86,372.38
  4. Step 4: Simplify right side
    288,760.39x = 37,416,722,309.71
  5. Step 5: Solve for x
    x = 37,416,722,309.71/288,760.39
  6. Step 6: Final answer
    x = 129,577.06

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1.5x scale

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.