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Finding the Fourth Proportional to 383,453.10, 575,179.65 and 271,478.70

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Solution

The fourth proportional to 383,453.10, 575,179.65 and 271,478.70 is: 407,218.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,453.10 : 575,179.65 = 271,478.70 : x
  2. Step 2: Convert to fraction form
    383,453.10/575,179.65 = 271,478.70/x
  3. Step 3: Cross multiply
    383,453.10x = 575,179.65 × 271,478.70
  4. Step 4: Simplify right side
    383,453.10x = 156,149,023,648.46
  5. Step 5: Solve for x
    x = 156,149,023,648.46/383,453.10
  6. Step 6: Final answer
    x = 407,218.05

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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.