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Finding the Fourth Proportional to 268,324.61, 402,236.77 and 90,707.41

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Solution

The fourth proportional to 268,324.61, 402,236.77 and 90,707.41 is: 135,976.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,324.61 : 402,236.77 = 90,707.41 : x
  2. Step 2: Convert to fraction form
    268,324.61/402,236.77 = 90,707.41/x
  3. Step 3: Cross multiply
    268,324.61x = 402,236.77 × 90,707.41
  4. Step 4: Simplify right side
    268,324.61x = 36,485,855,613.47
  5. Step 5: Solve for x
    x = 36,485,855,613.47/268,324.61
  6. Step 6: Final answer
    x = 135,976.55

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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.