Home / 280,331.76-420,247.56-102,797.28

Finding the Fourth Proportional to 280,331.76, 420,247.56 and 102,797.28

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Solution

The fourth proportional to 280,331.76, 420,247.56 and 102,797.28 is: 154,104.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,331.76 : 420,247.56 = 102,797.28 : x
  2. Step 2: Convert to fraction form
    280,331.76/420,247.56 = 102,797.28/x
  3. Step 3: Cross multiply
    280,331.76x = 420,247.56 × 102,797.28
  4. Step 4: Simplify right side
    280,331.76x = 43,200,306,094.64
  5. Step 5: Solve for x
    x = 43,200,306,094.64/280,331.76
  6. Step 6: Final answer
    x = 154,104.22

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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.