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Finding the Fourth Proportional to 317,331.33, 476,121.47 and 139,713.75

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Solution

The fourth proportional to 317,331.33, 476,121.47 and 139,713.75 is: 209,625.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,331.33 : 476,121.47 = 139,713.75 : x
  2. Step 2: Convert to fraction form
    317,331.33/476,121.47 = 139,713.75/x
  3. Step 3: Cross multiply
    317,331.33x = 476,121.47 × 139,713.75
  4. Step 4: Simplify right side
    317,331.33x = 66,520,715,330.64
  5. Step 5: Solve for x
    x = 66,520,715,330.64/317,331.33
  6. Step 6: Final answer
    x = 209,625.43

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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.