Home / 220,629.78-331,054.02-87,507.18

Finding the Fourth Proportional to 220,629.78, 331,054.02 and 87,507.18

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Solution

The fourth proportional to 220,629.78, 331,054.02 and 87,507.18 is: 131,304.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,629.78 : 331,054.02 = 87,507.18 : x
  2. Step 2: Convert to fraction form
    220,629.78/331,054.02 = 87,507.18/x
  3. Step 3: Cross multiply
    220,629.78x = 331,054.02 × 87,507.18
  4. Step 4: Simplify right side
    220,629.78x = 28,969,603,717.86
  5. Step 5: Solve for x
    x = 28,969,603,717.86/220,629.78
  6. Step 6: Final answer
    x = 131,304.14

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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.