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Finding the Fourth Proportional to 268,793.60, 403,118.40 and 81,754.88

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Solution

The fourth proportional to 268,793.60, 403,118.40 and 81,754.88 is: 122,610.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,793.60 : 403,118.40 = 81,754.88 : x
  2. Step 2: Convert to fraction form
    268,793.60/403,118.40 = 81,754.88/x
  3. Step 3: Cross multiply
    268,793.60x = 403,118.40 × 81,754.88
  4. Step 4: Simplify right side
    268,793.60x = 32,956,896,417.79
  5. Step 5: Solve for x
    x = 32,956,896,417.79/268,793.60
  6. Step 6: Final answer
    x = 122,610.42

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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.