Home / 278,820.28-417,995.32-120,929.88

Finding the Fourth Proportional to 278,820.28, 417,995.32 and 120,929.88

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Solution

The fourth proportional to 278,820.28, 417,995.32 and 120,929.88 is: 181,292.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,820.28 : 417,995.32 = 120,929.88 : x
  2. Step 2: Convert to fraction form
    278,820.28/417,995.32 = 120,929.88/x
  3. Step 3: Cross multiply
    278,820.28x = 417,995.32 × 120,929.88
  4. Step 4: Simplify right side
    278,820.28x = 50,548,123,888.16
  5. Step 5: Solve for x
    x = 50,548,123,888.16/278,820.28
  6. Step 6: Final answer
    x = 181,292.85

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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.