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Finding the Fourth Proportional to 268,897.08, 403,331.04 and 81,894

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Solution

The fourth proportional to 268,897.08, 403,331.04 and 81,894 is: 122,836.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,897.08 : 403,331.04 = 81,894 : x
  2. Step 2: Convert to fraction form
    268,897.08/403,331.04 = 81,894/x
  3. Step 3: Cross multiply
    268,897.08x = 403,331.04 × 81,894
  4. Step 4: Simplify right side
    268,897.08x = 33,030,392,189.76
  5. Step 5: Solve for x
    x = 33,030,392,189.76/268,897.08
  6. Step 6: Final answer
    x = 122,836.56

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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.