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Finding the Fourth Proportional to 216,010.73, 324,018.02 and 66,251.72

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Solution

The fourth proportional to 216,010.73, 324,018.02 and 66,251.72 is: 99,378.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,010.73 : 324,018.02 = 66,251.72 : x
  2. Step 2: Convert to fraction form
    216,010.73/324,018.02 = 66,251.72/x
  3. Step 3: Cross multiply
    216,010.73x = 324,018.02 × 66,251.72
  4. Step 4: Simplify right side
    216,010.73x = 21,466,750,648.16
  5. Step 5: Solve for x
    x = 21,466,750,648.16/216,010.73
  6. Step 6: Final answer
    x = 99,378.17

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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.