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Finding the Fourth Proportional to 216,086.28, 324,129.42 and 58,314.72

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Solution

The fourth proportional to 216,086.28, 324,129.42 and 58,314.72 is: 87,472.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,086.28 : 324,129.42 = 58,314.72 : x
  2. Step 2: Convert to fraction form
    216,086.28/324,129.42 = 58,314.72/x
  3. Step 3: Cross multiply
    216,086.28x = 324,129.42 × 58,314.72
  4. Step 4: Simplify right side
    216,086.28x = 18,901,516,371.06
  5. Step 5: Solve for x
    x = 18,901,516,371.06/216,086.28
  6. Step 6: Final answer
    x = 87,472.08

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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.