Home / 218,254.32-327,388.08-85,129.20

Finding the Fourth Proportional to 218,254.32, 327,388.08 and 85,129.20

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Solution

The fourth proportional to 218,254.32, 327,388.08 and 85,129.20 is: 127,696.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,254.32 : 327,388.08 = 85,129.20 : x
  2. Step 2: Convert to fraction form
    218,254.32/327,388.08 = 85,129.20/x
  3. Step 3: Cross multiply
    218,254.32x = 327,388.08 × 85,129.20
  4. Step 4: Simplify right side
    218,254.32x = 27,870,285,339.94
  5. Step 5: Solve for x
    x = 27,870,285,339.94/218,254.32
  6. Step 6: Final answer
    x = 127,696.37

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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.