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Finding the Fourth Proportional to 240,475.76, 331,760.09 and 138,446.48

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Solution

The fourth proportional to 240,475.76, 331,760.09 and 138,446.48 is: 191,000.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,475.76 : 331,760.09 = 138,446.48 : x
  2. Step 2: Convert to fraction form
    240,475.76/331,760.09 = 138,446.48/x
  3. Step 3: Cross multiply
    240,475.76x = 331,760.09 × 138,446.48
  4. Step 4: Simplify right side
    240,475.76x = 45,931,015,988.69
  5. Step 5: Solve for x
    x = 45,931,015,988.69/240,475.76
  6. Step 6: Final answer
    x = 191,000.61

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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.