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Finding the Fourth Proportional to 216,630.66, 324,724.44 and 83,458.74

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Solution

The fourth proportional to 216,630.66, 324,724.44 and 83,458.74 is: 125,102.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,630.66 : 324,724.44 = 83,458.74 : x
  2. Step 2: Convert to fraction form
    216,630.66/324,724.44 = 83,458.74/x
  3. Step 3: Cross multiply
    216,630.66x = 324,724.44 × 83,458.74
  4. Step 4: Simplify right side
    216,630.66x = 27,101,092,609.61
  5. Step 5: Solve for x
    x = 27,101,092,609.61/216,630.66
  6. Step 6: Final answer
    x = 125,102.76

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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.