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Finding the Fourth Proportional to 318,491.62, 439,468.20 and 182,499.40

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Solution

The fourth proportional to 318,491.62, 439,468.20 and 182,499.40 is: 251,820.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,491.62 : 439,468.20 = 182,499.40 : x
  2. Step 2: Convert to fraction form
    318,491.62/439,468.20 = 182,499.40/x
  3. Step 3: Cross multiply
    318,491.62x = 439,468.20 × 182,499.40
  4. Step 4: Simplify right side
    318,491.62x = 80,202,682,819.08
  5. Step 5: Solve for x
    x = 80,202,682,819.08/318,491.62
  6. Step 6: Final answer
    x = 251,820.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.