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Finding the Fourth Proportional to 217,497.60, 326,230.20 and 91,105.20

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Solution

The fourth proportional to 217,497.60, 326,230.20 and 91,105.20 is: 136,651.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,497.60 : 326,230.20 = 91,105.20 : x
  2. Step 2: Convert to fraction form
    217,497.60/326,230.20 = 91,105.20/x
  3. Step 3: Cross multiply
    217,497.60x = 326,230.20 × 91,105.20
  4. Step 4: Simplify right side
    217,497.60x = 29,721,267,617.04
  5. Step 5: Solve for x
    x = 29,721,267,617.04/217,497.60
  6. Step 6: Final answer
    x = 136,651.01

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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.