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Finding the Fourth Proportional to 217,306.80, 325,814.40 and 98,917.20

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Solution

The fourth proportional to 217,306.80, 325,814.40 and 98,917.20 is: 148,309.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,306.80 : 325,814.40 = 98,917.20 : x
  2. Step 2: Convert to fraction form
    217,306.80/325,814.40 = 98,917.20/x
  3. Step 3: Cross multiply
    217,306.80x = 325,814.40 × 98,917.20
  4. Step 4: Simplify right side
    217,306.80x = 32,228,648,167.68
  5. Step 5: Solve for x
    x = 32,228,648,167.68/217,306.80
  6. Step 6: Final answer
    x = 148,309.43

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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.