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Finding the Fourth Proportional to 268,102.38, 402,153.25 and 68,422.79

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Solution

The fourth proportional to 268,102.38, 402,153.25 and 68,422.79 is: 102,634.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,102.38 : 402,153.25 = 68,422.79 : x
  2. Step 2: Convert to fraction form
    268,102.38/402,153.25 = 68,422.79/x
  3. Step 3: Cross multiply
    268,102.38x = 402,153.25 × 68,422.79
  4. Step 4: Simplify right side
    268,102.38x = 27,516,446,025.07
  5. Step 5: Solve for x
    x = 27,516,446,025.07/268,102.38
  6. Step 6: Final answer
    x = 102,634.10

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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.