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Finding the Fourth Proportional to 218,609.80, 327,768.90 and 100,220.20

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Solution

The fourth proportional to 218,609.80, 327,768.90 and 100,220.20 is: 150,263.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,609.80 : 327,768.90 = 100,220.20 : x
  2. Step 2: Convert to fraction form
    218,609.80/327,768.90 = 100,220.20/x
  3. Step 3: Cross multiply
    218,609.80x = 327,768.90 × 100,220.20
  4. Step 4: Simplify right side
    218,609.80x = 32,849,064,711.78
  5. Step 5: Solve for x
    x = 32,849,064,711.78/218,609.80
  6. Step 6: Final answer
    x = 150,263.46

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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.