Home / 230,546.20-318,147.42-128,574.76

Finding the Fourth Proportional to 230,546.20, 318,147.42 and 128,574.76

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Solution

The fourth proportional to 230,546.20, 318,147.42 and 128,574.76 is: 177,429.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,546.20 : 318,147.42 = 128,574.76 : x
  2. Step 2: Convert to fraction form
    230,546.20/318,147.42 = 128,574.76/x
  3. Step 3: Cross multiply
    230,546.20x = 318,147.42 × 128,574.76
  4. Step 4: Simplify right side
    230,546.20x = 40,905,728,171.12
  5. Step 5: Solve for x
    x = 40,905,728,171.12/230,546.20
  6. Step 6: Final answer
    x = 177,429.64

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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.