Home / 218,575.50-327,644.37-85,272.36

Finding the Fourth Proportional to 218,575.50, 327,644.37 and 85,272.36

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Solution

The fourth proportional to 218,575.50, 327,644.37 and 85,272.36 is: 127,823.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,575.50 : 327,644.37 = 85,272.36 : x
  2. Step 2: Convert to fraction form
    218,575.50/327,644.37 = 85,272.36/x
  3. Step 3: Cross multiply
    218,575.50x = 327,644.37 × 85,272.36
  4. Step 4: Simplify right side
    218,575.50x = 27,939,008,670.61
  5. Step 5: Solve for x
    x = 27,939,008,670.61/218,575.50
  6. Step 6: Final answer
    x = 127,823.15

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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.