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Finding the Fourth Proportional to 398,050.80, 597,076.20 and 272,079.60

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Solution

The fourth proportional to 398,050.80, 597,076.20 and 272,079.60 is: 408,119.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,050.80 : 597,076.20 = 272,079.60 : x
  2. Step 2: Convert to fraction form
    398,050.80/597,076.20 = 272,079.60/x
  3. Step 3: Cross multiply
    398,050.80x = 597,076.20 × 272,079.60
  4. Step 4: Simplify right side
    398,050.80x = 162,452,253,665.52
  5. Step 5: Solve for x
    x = 162,452,253,665.52/398,050.80
  6. Step 6: Final answer
    x = 408,119.40

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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.