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Finding the Fourth Proportional to 398,108.80, 597,150.40 and 131,881.60

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Solution

The fourth proportional to 398,108.80, 597,150.40 and 131,881.60 is: 197,818.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,108.80 : 597,150.40 = 131,881.60 : x
  2. Step 2: Convert to fraction form
    398,108.80/597,150.40 = 131,881.60/x
  3. Step 3: Cross multiply
    398,108.80x = 597,150.40 × 131,881.60
  4. Step 4: Simplify right side
    398,108.80x = 78,753,150,192.64
  5. Step 5: Solve for x
    x = 78,753,150,192.64/398,108.80
  6. Step 6: Final answer
    x = 197,818.16

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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.