Home / 278,826.64-418,004.85-120,936.18

Finding the Fourth Proportional to 278,826.64, 418,004.85 and 120,936.18

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Solution

The fourth proportional to 278,826.64, 418,004.85 and 120,936.18 is: 181,302.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,826.64 : 418,004.85 = 120,936.18 : x
  2. Step 2: Convert to fraction form
    278,826.64/418,004.85 = 120,936.18/x
  3. Step 3: Cross multiply
    278,826.64x = 418,004.85 × 120,936.18
  4. Step 4: Simplify right side
    278,826.64x = 50,551,909,780.47
  5. Step 5: Solve for x
    x = 50,551,909,780.47/278,826.64
  6. Step 6: Final answer
    x = 181,302.30

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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.