Home / 278,315.10-417,569.85-100,827.90

Finding the Fourth Proportional to 278,315.10, 417,569.85 and 100,827.90

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Solution

The fourth proportional to 278,315.10, 417,569.85 and 100,827.90 is: 151,277.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,315.10 : 417,569.85 = 100,827.90 : x
  2. Step 2: Convert to fraction form
    278,315.10/417,569.85 = 100,827.90/x
  3. Step 3: Cross multiply
    278,315.10x = 417,569.85 × 100,827.90
  4. Step 4: Simplify right side
    278,315.10x = 42,102,691,078.82
  5. Step 5: Solve for x
    x = 42,102,691,078.82/278,315.10
  6. Step 6: Final answer
    x = 151,277.06

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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.