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Finding the Fourth Proportional to 240,221.29, 331,489.58 and 138,230.29

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Solution

The fourth proportional to 240,221.29, 331,489.58 and 138,230.29 is: 190,748.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,221.29 : 331,489.58 = 138,230.29 : x
  2. Step 2: Convert to fraction form
    240,221.29/331,489.58 = 138,230.29/x
  3. Step 3: Cross multiply
    240,221.29x = 331,489.58 × 138,230.29
  4. Step 4: Simplify right side
    240,221.29x = 45,821,900,635.40
  5. Step 5: Solve for x
    x = 45,821,900,635.40/240,221.29
  6. Step 6: Final answer
    x = 190,748.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.