Home / 278,820.89-417,996.23-120,930.42

Finding the Fourth Proportional to 278,820.89, 417,996.23 and 120,930.42

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Solution

The fourth proportional to 278,820.89, 417,996.23 and 120,930.42 is: 181,293.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,820.89 : 417,996.23 = 120,930.42 : x
  2. Step 2: Convert to fraction form
    278,820.89/417,996.23 = 120,930.42/x
  3. Step 3: Cross multiply
    278,820.89x = 417,996.23 × 120,930.42
  4. Step 4: Simplify right side
    278,820.89x = 50,548,459,652.32
  5. Step 5: Solve for x
    x = 50,548,459,652.32/278,820.89
  6. Step 6: Final answer
    x = 181,293.66

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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.