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Finding the Fourth Proportional to 268,456.48, 402,675.40 and 68,778.85

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Solution

The fourth proportional to 268,456.48, 402,675.40 and 68,778.85 is: 103,165.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,456.48 : 402,675.40 = 68,778.85 : x
  2. Step 2: Convert to fraction form
    268,456.48/402,675.40 = 68,778.85/x
  3. Step 3: Cross multiply
    268,456.48x = 402,675.40 × 68,778.85
  4. Step 4: Simplify right side
    268,456.48x = 27,695,550,935.29
  5. Step 5: Solve for x
    x = 27,695,550,935.29/268,456.48
  6. Step 6: Final answer
    x = 103,165.89

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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.