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Finding the Fourth Proportional to 317,278.20, 475,917.30 and 242,628.60

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Solution

The fourth proportional to 317,278.20, 475,917.30 and 242,628.60 is: 363,942.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,278.20 : 475,917.30 = 242,628.60 : x
  2. Step 2: Convert to fraction form
    317,278.20/475,917.30 = 242,628.60/x
  3. Step 3: Cross multiply
    317,278.20x = 475,917.30 × 242,628.60
  4. Step 4: Simplify right side
    317,278.20x = 115,471,148,214.78
  5. Step 5: Solve for x
    x = 115,471,148,214.78/317,278.20
  6. Step 6: Final answer
    x = 363,942.90

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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.