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Finding the Fourth Proportional to 484,097.78, 667,944.69 and 280,143.56

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Solution

The fourth proportional to 484,097.78, 667,944.69 and 280,143.56 is: 386,534.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,097.78 : 667,944.69 = 280,143.56 : x
  2. Step 2: Convert to fraction form
    484,097.78/667,944.69 = 280,143.56/x
  3. Step 3: Cross multiply
    484,097.78x = 667,944.69 × 280,143.56
  4. Step 4: Simplify right side
    484,097.78x = 187,120,403,339.70
  5. Step 5: Solve for x
    x = 187,120,403,339.70/484,097.78
  6. Step 6: Final answer
    x = 386,534.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.