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Finding the Fourth Proportional to 487,310.47, 672,309.98 and 293,760.97

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Solution

The fourth proportional to 487,310.47, 672,309.98 and 293,760.97 is: 405,282.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,310.47 : 672,309.98 = 293,760.97 : x
  2. Step 2: Convert to fraction form
    487,310.47/672,309.98 = 293,760.97/x
  3. Step 3: Cross multiply
    487,310.47x = 672,309.98 × 293,760.97
  4. Step 4: Simplify right side
    487,310.47x = 197,498,431,865.48
  5. Step 5: Solve for x
    x = 197,498,431,865.48/487,310.47
  6. Step 6: Final answer
    x = 405,282.55

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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.