Home / 268,306.76-402,518.22-81,332.36

Finding the Fourth Proportional to 268,306.76, 402,518.22 and 81,332.36

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Solution

The fourth proportional to 268,306.76, 402,518.22 and 81,332.36 is: 122,016.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,306.76 : 402,518.22 = 81,332.36 : x
  2. Step 2: Convert to fraction form
    268,306.76/402,518.22 = 81,332.36/x
  3. Step 3: Cross multiply
    268,306.76x = 402,518.22 × 81,332.36
  4. Step 4: Simplify right side
    268,306.76x = 32,737,756,775.60
  5. Step 5: Solve for x
    x = 32,737,756,775.60/268,306.76
  6. Step 6: Final answer
    x = 122,016.15

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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.