Home / 278,434.12-417,651.18-68,069.56

Finding the Fourth Proportional to 278,434.12, 417,651.18 and 68,069.56

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Solution

The fourth proportional to 278,434.12, 417,651.18 and 68,069.56 is: 102,104.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,434.12 : 417,651.18 = 68,069.56 : x
  2. Step 2: Convert to fraction form
    278,434.12/417,651.18 = 68,069.56/x
  3. Step 3: Cross multiply
    278,434.12x = 417,651.18 × 68,069.56
  4. Step 4: Simplify right side
    278,434.12x = 28,429,332,056.08
  5. Step 5: Solve for x
    x = 28,429,332,056.08/278,434.12
  6. Step 6: Final answer
    x = 102,104.34

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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.