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Finding the Fourth Proportional to 218,516.20, 327,543.90 and 124,820.20

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Solution

The fourth proportional to 218,516.20, 327,543.90 and 124,820.20 is: 187,098.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,516.20 : 327,543.90 = 124,820.20 : x
  2. Step 2: Convert to fraction form
    218,516.20/327,543.90 = 124,820.20/x
  3. Step 3: Cross multiply
    218,516.20x = 327,543.90 × 124,820.20
  4. Step 4: Simplify right side
    218,516.20x = 40,884,095,106.78
  5. Step 5: Solve for x
    x = 40,884,095,106.78/218,516.20
  6. Step 6: Final answer
    x = 187,098.69

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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.