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Finding the Fourth Proportional to 484,125.72, 668,046.69 and 280,135.95

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Solution

The fourth proportional to 484,125.72, 668,046.69 and 280,135.95 is: 386,560.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,125.72 : 668,046.69 = 280,135.95 : x
  2. Step 2: Convert to fraction form
    484,125.72/668,046.69 = 280,135.95/x
  3. Step 3: Cross multiply
    484,125.72x = 668,046.69 × 280,135.95
  4. Step 4: Simplify right side
    484,125.72x = 187,143,894,147.51
  5. Step 5: Solve for x
    x = 187,143,894,147.51/484,125.72
  6. Step 6: Final answer
    x = 386,560.53

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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.