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Finding the Fourth Proportional to 218,646.28, 327,760.26 and 85,482.28

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Solution

The fourth proportional to 218,646.28, 327,760.26 and 85,482.28 is: 128,141.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,646.28 : 327,760.26 = 85,482.28 : x
  2. Step 2: Convert to fraction form
    218,646.28/327,760.26 = 85,482.28/x
  3. Step 3: Cross multiply
    218,646.28x = 327,760.26 × 85,482.28
  4. Step 4: Simplify right side
    218,646.28x = 28,017,694,318.19
  5. Step 5: Solve for x
    x = 28,017,694,318.19/218,646.28
  6. Step 6: Final answer
    x = 128,141.65

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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.