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Finding the Fourth Proportional to 268,454.48, 402,672.40 and 68,776.85

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Solution

The fourth proportional to 268,454.48, 402,672.40 and 68,776.85 is: 103,162.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,454.48 : 402,672.40 = 68,776.85 : x
  2. Step 2: Convert to fraction form
    268,454.48/402,672.40 = 68,776.85/x
  3. Step 3: Cross multiply
    268,454.48x = 402,672.40 × 68,776.85
  4. Step 4: Simplify right side
    268,454.48x = 27,694,540,088.68
  5. Step 5: Solve for x
    x = 27,694,540,088.68/268,454.48
  6. Step 6: Final answer
    x = 103,162.89

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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.