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Finding the Fourth Proportional to 230,327.18, 317,843.28 and 128,347.37

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Solution

The fourth proportional to 230,327.18, 317,843.28 and 128,347.37 is: 177,114.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,327.18 : 317,843.28 = 128,347.37 : x
  2. Step 2: Convert to fraction form
    230,327.18/317,843.28 = 128,347.37/x
  3. Step 3: Cross multiply
    230,327.18x = 317,843.28 × 128,347.37
  4. Step 4: Simplify right side
    230,327.18x = 40,794,347,470.96
  5. Step 5: Solve for x
    x = 40,794,347,470.96/230,327.18
  6. Step 6: Final answer
    x = 177,114.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.