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Finding the Fourth Proportional to 216,572.79, 324,887.18 and 83,491.11

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Solution

The fourth proportional to 216,572.79, 324,887.18 and 83,491.11 is: 125,247.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,572.79 : 324,887.18 = 83,491.11 : x
  2. Step 2: Convert to fraction form
    216,572.79/324,887.18 = 83,491.11/x
  3. Step 3: Cross multiply
    216,572.79x = 324,887.18 × 83,491.11
  4. Step 4: Simplify right side
    216,572.79x = 27,125,191,282.97
  5. Step 5: Solve for x
    x = 27,125,191,282.97/216,572.79
  6. Step 6: Final answer
    x = 125,247.46

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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.