Home / 225,319.28-311,018.32-129,864.08

Finding the Fourth Proportional to 225,319.28, 311,018.32 and 129,864.08

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Solution

The fourth proportional to 225,319.28, 311,018.32 and 129,864.08 is: 179,257.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,319.28 : 311,018.32 = 129,864.08 : x
  2. Step 2: Convert to fraction form
    225,319.28/311,018.32 = 129,864.08/x
  3. Step 3: Cross multiply
    225,319.28x = 311,018.32 × 129,864.08
  4. Step 4: Simplify right side
    225,319.28x = 40,390,107,989.95
  5. Step 5: Solve for x
    x = 40,390,107,989.95/225,319.28
  6. Step 6: Final answer
    x = 179,257.22

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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.