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Finding the Fourth Proportional to 268,445.61, 402,659.12 and 68,767.97

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Solution

The fourth proportional to 268,445.61, 402,659.12 and 68,767.97 is: 103,149.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,445.61 : 402,659.12 = 68,767.97 : x
  2. Step 2: Convert to fraction form
    268,445.61/402,659.12 = 68,767.97/x
  3. Step 3: Cross multiply
    268,445.61x = 402,659.12 × 68,767.97
  4. Step 4: Simplify right side
    268,445.61x = 27,690,048,443.01
  5. Step 5: Solve for x
    x = 27,690,048,443.01/268,445.61
  6. Step 6: Final answer
    x = 103,149.57

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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.