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Finding the Fourth Proportional to 268,873.98, 403,244.01 and 81,882.78

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Solution

The fourth proportional to 268,873.98, 403,244.01 and 81,882.78 is: 122,803.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,873.98 : 403,244.01 = 81,882.78 : x
  2. Step 2: Convert to fraction form
    268,873.98/403,244.01 = 81,882.78/x
  3. Step 3: Cross multiply
    268,873.98x = 403,244.01 × 81,882.78
  4. Step 4: Simplify right side
    268,873.98x = 33,018,740,557.15
  5. Step 5: Solve for x
    x = 33,018,740,557.15/268,873.98
  6. Step 6: Final answer
    x = 122,803.78

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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.