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Finding the Fourth Proportional to 217,213.80, 325,877.40 and 84,098.40

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Solution

The fourth proportional to 217,213.80, 325,877.40 and 84,098.40 is: 126,169.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,213.80 : 325,877.40 = 84,098.40 : x
  2. Step 2: Convert to fraction form
    217,213.80/325,877.40 = 84,098.40/x
  3. Step 3: Cross multiply
    217,213.80x = 325,877.40 × 84,098.40
  4. Step 4: Simplify right side
    217,213.80x = 27,405,767,936.16
  5. Step 5: Solve for x
    x = 27,405,767,936.16/217,213.80
  6. Step 6: Final answer
    x = 126,169.55

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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.