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Finding the Fourth Proportional to 268,248.60, 401,716.80 and 127,843.20

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Solution

The fourth proportional to 268,248.60, 401,716.80 and 127,843.20 is: 191,452.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,248.60 : 401,716.80 = 127,843.20 : x
  2. Step 2: Convert to fraction form
    268,248.60/401,716.80 = 127,843.20/x
  3. Step 3: Cross multiply
    268,248.60x = 401,716.80 × 127,843.20
  4. Step 4: Simplify right side
    268,248.60x = 51,356,761,205.76
  5. Step 5: Solve for x
    x = 51,356,761,205.76/268,248.60
  6. Step 6: Final answer
    x = 191,452.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.