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Finding the Fourth Proportional to 317,262.36, 476,079.28 and 127,693.20

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Solution

The fourth proportional to 317,262.36, 476,079.28 and 127,693.20 is: 191,614.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,262.36 : 476,079.28 = 127,693.20 : x
  2. Step 2: Convert to fraction form
    317,262.36/476,079.28 = 127,693.20/x
  3. Step 3: Cross multiply
    317,262.36x = 476,079.28 × 127,693.20
  4. Step 4: Simplify right side
    317,262.36x = 60,792,086,716.90
  5. Step 5: Solve for x
    x = 60,792,086,716.90/317,262.36
  6. Step 6: Final answer
    x = 191,614.56

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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.