Home / 278,634.69-417,952.05-68,270.82

Finding the Fourth Proportional to 278,634.69, 417,952.05 and 68,270.82

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Solution

The fourth proportional to 278,634.69, 417,952.05 and 68,270.82 is: 102,406.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,634.69 : 417,952.05 = 68,270.82 : x
  2. Step 2: Convert to fraction form
    278,634.69/417,952.05 = 68,270.82/x
  3. Step 3: Cross multiply
    278,634.69x = 417,952.05 × 68,270.82
  4. Step 4: Simplify right side
    278,634.69x = 28,533,929,174.18
  5. Step 5: Solve for x
    x = 28,533,929,174.18/278,634.69
  6. Step 6: Final answer
    x = 102,406.23

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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.