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Finding the Fourth Proportional to 268,881.50, 403,319.50 and 69,201.11

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Solution

The fourth proportional to 268,881.50, 403,319.50 and 69,201.11 is: 103,800.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,881.50 : 403,319.50 = 69,201.11 : x
  2. Step 2: Convert to fraction form
    268,881.50/403,319.50 = 69,201.11/x
  3. Step 3: Cross multiply
    268,881.50x = 403,319.50 × 69,201.11
  4. Step 4: Simplify right side
    268,881.50x = 27,910,156,076.35
  5. Step 5: Solve for x
    x = 27,910,156,076.35/268,881.50
  6. Step 6: Final answer
    x = 103,800.95

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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.