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Finding the Fourth Proportional to 398,244.61, 597,145.49 and 131,859.81

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Solution

The fourth proportional to 398,244.61, 597,145.49 and 131,859.81 is: 197,716.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,244.61 : 597,145.49 = 131,859.81 : x
  2. Step 2: Convert to fraction form
    398,244.61/597,145.49 = 131,859.81/x
  3. Step 3: Cross multiply
    398,244.61x = 597,145.49 × 131,859.81
  4. Step 4: Simplify right side
    398,244.61x = 78,739,491,065.10
  5. Step 5: Solve for x
    x = 78,739,491,065.10/398,244.61
  6. Step 6: Final answer
    x = 197,716.40

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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.