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Finding the Fourth Proportional to 317,998.31, 477,216.17 and 131,009.81

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Solution

The fourth proportional to 317,998.31, 477,216.17 and 131,009.81 is: 196,604.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,998.31 : 477,216.17 = 131,009.81 : x
  2. Step 2: Convert to fraction form
    317,998.31/477,216.17 = 131,009.81/x
  3. Step 3: Cross multiply
    317,998.31x = 477,216.17 × 131,009.81
  4. Step 4: Simplify right side
    317,998.31x = 62,520,000,789.91
  5. Step 5: Solve for x
    x = 62,520,000,789.91/317,998.31
  6. Step 6: Final answer
    x = 196,604.82

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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.