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Finding the Fourth Proportional to 251,922.40, 347,644.56 and 138,744.88

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Solution

The fourth proportional to 251,922.40, 347,644.56 and 138,744.88 is: 191,463.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,922.40 : 347,644.56 = 138,744.88 : x
  2. Step 2: Convert to fraction form
    251,922.40/347,644.56 = 138,744.88/x
  3. Step 3: Cross multiply
    251,922.40x = 347,644.56 × 138,744.88
  4. Step 4: Simplify right side
    251,922.40x = 48,233,902,759.85
  5. Step 5: Solve for x
    x = 48,233,902,759.85/251,922.40
  6. Step 6: Final answer
    x = 191,463.33

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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.