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Finding the Fourth Proportional to 268,877.52, 403,199.52 and 81,845.28

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Solution

The fourth proportional to 268,877.52, 403,199.52 and 81,845.28 is: 122,732.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,877.52 : 403,199.52 = 81,845.28 : x
  2. Step 2: Convert to fraction form
    268,877.52/403,199.52 = 81,845.28/x
  3. Step 3: Cross multiply
    268,877.52x = 403,199.52 × 81,845.28
  4. Step 4: Simplify right side
    268,877.52x = 32,999,977,610.27
  5. Step 5: Solve for x
    x = 32,999,977,610.27/268,877.52
  6. Step 6: Final answer
    x = 122,732.38

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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.