Home / 278,259.68-417,386.28-192,791.72

Finding the Fourth Proportional to 278,259.68, 417,386.28 and 192,791.72

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Solution

The fourth proportional to 278,259.68, 417,386.28 and 192,791.72 is: 289,185.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,259.68 : 417,386.28 = 192,791.72 : x
  2. Step 2: Convert to fraction form
    278,259.68/417,386.28 = 192,791.72/x
  3. Step 3: Cross multiply
    278,259.68x = 417,386.28 × 192,791.72
  4. Step 4: Simplify right side
    278,259.68x = 80,468,618,825.60
  5. Step 5: Solve for x
    x = 80,468,618,825.60/278,259.68
  6. Step 6: Final answer
    x = 289,185.34

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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.