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Finding the Fourth Proportional to 398,000.80, 597,001.20 and 272,029.60

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Solution

The fourth proportional to 398,000.80, 597,001.20 and 272,029.60 is: 408,044.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,000.80 : 597,001.20 = 272,029.60 : x
  2. Step 2: Convert to fraction form
    398,000.80/597,001.20 = 272,029.60/x
  3. Step 3: Cross multiply
    398,000.80x = 597,001.20 × 272,029.60
  4. Step 4: Simplify right side
    398,000.80x = 162,401,997,635.52
  5. Step 5: Solve for x
    x = 162,401,997,635.52/398,000.80
  6. Step 6: Final answer
    x = 408,044.40

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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.