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Finding the Fourth Proportional to 317,251.95, 476,002.52 and 139,634.43

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Solution

The fourth proportional to 317,251.95, 476,002.52 and 139,634.43 is: 209,506.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,251.95 : 476,002.52 = 139,634.43 : x
  2. Step 2: Convert to fraction form
    317,251.95/476,002.52 = 139,634.43/x
  3. Step 3: Cross multiply
    317,251.95x = 476,002.52 × 139,634.43
  4. Step 4: Simplify right side
    317,251.95x = 66,466,340,558.76
  5. Step 5: Solve for x
    x = 66,466,340,558.76/317,251.95
  6. Step 6: Final answer
    x = 209,506.48

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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.