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Finding the Fourth Proportional to 317,687.20, 476,401.20 and 107,216.80

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Solution

The fourth proportional to 317,687.20, 476,401.20 and 107,216.80 is: 160,781.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,687.20 : 476,401.20 = 107,216.80 : x
  2. Step 2: Convert to fraction form
    317,687.20/476,401.20 = 107,216.80/x
  3. Step 3: Cross multiply
    317,687.20x = 476,401.20 × 107,216.80
  4. Step 4: Simplify right side
    317,687.20x = 51,078,212,180.16
  5. Step 5: Solve for x
    x = 51,078,212,180.16/317,687.20
  6. Step 6: Final answer
    x = 160,781.46

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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.