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Finding the Fourth Proportional to 218,771.40, 328,116.60 and 60,967.20

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Solution

The fourth proportional to 218,771.40, 328,116.60 and 60,967.20 is: 91,439.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,771.40 : 328,116.60 = 60,967.20 : x
  2. Step 2: Convert to fraction form
    218,771.40/328,116.60 = 60,967.20/x
  3. Step 3: Cross multiply
    218,771.40x = 328,116.60 × 60,967.20
  4. Step 4: Simplify right side
    218,771.40x = 20,004,350,375.52
  5. Step 5: Solve for x
    x = 20,004,350,375.52/218,771.40
  6. Step 6: Final answer
    x = 91,439.51

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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.