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Finding the Fourth Proportional to 240,046.44, 331,254 and 138,064.20

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Solution

The fourth proportional to 240,046.44, 331,254 and 138,064.20 is: 190,522.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,046.44 : 331,254 = 138,064.20 : x
  2. Step 2: Convert to fraction form
    240,046.44/331,254 = 138,064.20/x
  3. Step 3: Cross multiply
    240,046.44x = 331,254 × 138,064.20
  4. Step 4: Simplify right side
    240,046.44x = 45,734,318,506.80
  5. Step 5: Solve for x
    x = 45,734,318,506.80/240,046.44
  6. Step 6: Final answer
    x = 190,522.79

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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.