Home / 207,913.30-311,432.55-172,921.30

Finding the Fourth Proportional to 207,913.30, 311,432.55 and 172,921.30

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Solution

The fourth proportional to 207,913.30, 311,432.55 and 172,921.30 is: 259,018.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,913.30 : 311,432.55 = 172,921.30 : x
  2. Step 2: Convert to fraction form
    207,913.30/311,432.55 = 172,921.30/x
  3. Step 3: Cross multiply
    207,913.30x = 311,432.55 × 172,921.30
  4. Step 4: Simplify right side
    207,913.30x = 53,853,321,408.32
  5. Step 5: Solve for x
    x = 53,853,321,408.32/207,913.30
  6. Step 6: Final answer
    x = 259,018.16

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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.