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Finding the Fourth Proportional to 240,381.54, 331,736.56 and 138,404.46

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Solution

The fourth proportional to 240,381.54, 331,736.56 and 138,404.46 is: 191,003.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,381.54 : 331,736.56 = 138,404.46 : x
  2. Step 2: Convert to fraction form
    240,381.54/331,736.56 = 138,404.46/x
  3. Step 3: Cross multiply
    240,381.54x = 331,736.56 × 138,404.46
  4. Step 4: Simplify right side
    240,381.54x = 45,913,818,757.04
  5. Step 5: Solve for x
    x = 45,913,818,757.04/240,381.54
  6. Step 6: Final answer
    x = 191,003.93

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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.