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Finding the Fourth Proportional to 217,593.64, 326,128.02 and 112,355.20

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Solution

The fourth proportional to 217,593.64, 326,128.02 and 112,355.20 is: 168,397.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,593.64 : 326,128.02 = 112,355.20 : x
  2. Step 2: Convert to fraction form
    217,593.64/326,128.02 = 112,355.20/x
  3. Step 3: Cross multiply
    217,593.64x = 326,128.02 × 112,355.20
  4. Step 4: Simplify right side
    217,593.64x = 36,642,178,912.70
  5. Step 5: Solve for x
    x = 36,642,178,912.70/217,593.64
  6. Step 6: Final answer
    x = 168,397.29

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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.