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Finding the Fourth Proportional to 212,375.91, 318,190.12 and 199,733.46

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Solution

The fourth proportional to 212,375.91, 318,190.12 and 199,733.46 is: 299,248.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,375.91 : 318,190.12 = 199,733.46 : x
  2. Step 2: Convert to fraction form
    212,375.91/318,190.12 = 199,733.46/x
  3. Step 3: Cross multiply
    212,375.91x = 318,190.12 × 199,733.46
  4. Step 4: Simplify right side
    212,375.91x = 63,553,213,605.42
  5. Step 5: Solve for x
    x = 63,553,213,605.42/212,375.91
  6. Step 6: Final answer
    x = 299,248.69

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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.