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Finding the Fourth Proportional to 216,009.98, 324,016.89 and 66,250.97

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Solution

The fourth proportional to 216,009.98, 324,016.89 and 66,250.97 is: 99,377.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,009.98 : 324,016.89 = 66,250.97 : x
  2. Step 2: Convert to fraction form
    216,009.98/324,016.89 = 66,250.97/x
  3. Step 3: Cross multiply
    216,009.98x = 324,016.89 × 66,250.97
  4. Step 4: Simplify right side
    216,009.98x = 21,466,432,978.08
  5. Step 5: Solve for x
    x = 21,466,432,978.08/216,009.98
  6. Step 6: Final answer
    x = 99,377.04

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1.5x scale

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.