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Finding the Fourth Proportional to 218,800.08, 328,200.12 and 69,040.80

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Solution

The fourth proportional to 218,800.08, 328,200.12 and 69,040.80 is: 103,561.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,800.08 : 328,200.12 = 69,040.80 : x
  2. Step 2: Convert to fraction form
    218,800.08/328,200.12 = 69,040.80/x
  3. Step 3: Cross multiply
    218,800.08x = 328,200.12 × 69,040.80
  4. Step 4: Simplify right side
    218,800.08x = 22,659,198,844.90
  5. Step 5: Solve for x
    x = 22,659,198,844.90/218,800.08
  6. Step 6: Final answer
    x = 103,561.20

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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.