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Finding the Fourth Proportional to 268,456.58, 402,675.55 and 68,778.62

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Solution

The fourth proportional to 268,456.58, 402,675.55 and 68,778.62 is: 103,165.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,456.58 : 402,675.55 = 68,778.62 : x
  2. Step 2: Convert to fraction form
    268,456.58/402,675.55 = 68,778.62/x
  3. Step 3: Cross multiply
    268,456.58x = 402,675.55 × 68,778.62
  4. Step 4: Simplify right side
    268,456.58x = 27,695,468,636.74
  5. Step 5: Solve for x
    x = 27,695,468,636.74/268,456.58
  6. Step 6: Final answer
    x = 103,165.54

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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.