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Finding the Fourth Proportional to 216,443.52, 324,700.23 and 66,683.82

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Solution

The fourth proportional to 216,443.52, 324,700.23 and 66,683.82 is: 100,036.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,443.52 : 324,700.23 = 66,683.82 : x
  2. Step 2: Convert to fraction form
    216,443.52/324,700.23 = 66,683.82/x
  3. Step 3: Cross multiply
    216,443.52x = 324,700.23 × 66,683.82
  4. Step 4: Simplify right side
    216,443.52x = 21,652,251,691.28
  5. Step 5: Solve for x
    x = 21,652,251,691.28/216,443.52
  6. Step 6: Final answer
    x = 100,036.50

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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.