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Finding the Fourth Proportional to 317,963.80, 477,723.30 and 239,231.80

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Solution

The fourth proportional to 317,963.80, 477,723.30 and 239,231.80 is: 359,432.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,963.80 : 477,723.30 = 239,231.80 : x
  2. Step 2: Convert to fraction form
    317,963.80/477,723.30 = 239,231.80/x
  3. Step 3: Cross multiply
    317,963.80x = 477,723.30 × 239,231.80
  4. Step 4: Simplify right side
    317,963.80x = 114,286,604,960.94
  5. Step 5: Solve for x
    x = 114,286,604,960.94/317,963.80
  6. Step 6: Final answer
    x = 359,432.76

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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.