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Finding the Fourth Proportional to 397,489.80, 596,234.70 and 131,291.40

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Solution

The fourth proportional to 397,489.80, 596,234.70 and 131,291.40 is: 196,937.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,489.80 : 596,234.70 = 131,291.40 : x
  2. Step 2: Convert to fraction form
    397,489.80/596,234.70 = 131,291.40/x
  3. Step 3: Cross multiply
    397,489.80x = 596,234.70 × 131,291.40
  4. Step 4: Simplify right side
    397,489.80x = 78,280,488,491.58
  5. Step 5: Solve for x
    x = 78,280,488,491.58/397,489.80
  6. Step 6: Final answer
    x = 196,937.10

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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.