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Finding the Fourth Proportional to 318,150.60, 439,043.10 and 172,951.56

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Solution

The fourth proportional to 318,150.60, 439,043.10 and 172,951.56 is: 238,670.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,150.60 : 439,043.10 = 172,951.56 : x
  2. Step 2: Convert to fraction form
    318,150.60/439,043.10 = 172,951.56/x
  3. Step 3: Cross multiply
    318,150.60x = 439,043.10 × 172,951.56
  4. Step 4: Simplify right side
    318,150.60x = 75,933,189,052.24
  5. Step 5: Solve for x
    x = 75,933,189,052.24/318,150.60
  6. Step 6: Final answer
    x = 238,670.58

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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.