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Finding the Fourth Proportional to 317,311.80, 476,745.30 and 238,579.80

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Solution

The fourth proportional to 317,311.80, 476,745.30 and 238,579.80 is: 358,454.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,311.80 : 476,745.30 = 238,579.80 : x
  2. Step 2: Convert to fraction form
    317,311.80/476,745.30 = 238,579.80/x
  3. Step 3: Cross multiply
    317,311.80x = 476,745.30 × 238,579.80
  4. Step 4: Simplify right side
    317,311.80x = 113,741,798,324.94
  5. Step 5: Solve for x
    x = 113,741,798,324.94/317,311.80
  6. Step 6: Final answer
    x = 358,454.36

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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.