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Finding the Fourth Proportional to 217,972.80, 327,007.80 and 84,841.20

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Solution

The fourth proportional to 217,972.80, 327,007.80 and 84,841.20 is: 127,280.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,972.80 : 327,007.80 = 84,841.20 : x
  2. Step 2: Convert to fraction form
    217,972.80/327,007.80 = 84,841.20/x
  3. Step 3: Cross multiply
    217,972.80x = 327,007.80 × 84,841.20
  4. Step 4: Simplify right side
    217,972.80x = 27,743,734,161.36
  5. Step 5: Solve for x
    x = 27,743,734,161.36/217,972.80
  6. Step 6: Final answer
    x = 127,280.72

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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.