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Finding the Fourth Proportional to 268,900.08, 403,335.54 and 81,897

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Solution

The fourth proportional to 268,900.08, 403,335.54 and 81,897 is: 122,841.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,900.08 : 403,335.54 = 81,897 : x
  2. Step 2: Convert to fraction form
    268,900.08/403,335.54 = 81,897/x
  3. Step 3: Cross multiply
    268,900.08x = 403,335.54 × 81,897
  4. Step 4: Simplify right side
    268,900.08x = 33,031,970,719.38
  5. Step 5: Solve for x
    x = 33,031,970,719.38/268,900.08
  6. Step 6: Final answer
    x = 122,841.06

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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.