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Finding the Fourth Proportional to 487,367.47, 672,521.96 and 269,571.45

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Solution

The fourth proportional to 487,367.47, 672,521.96 and 269,571.45 is: 371,983.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,367.47 : 672,521.96 = 269,571.45 : x
  2. Step 2: Convert to fraction form
    487,367.47/672,521.96 = 269,571.45/x
  3. Step 3: Cross multiply
    487,367.47x = 672,521.96 × 269,571.45
  4. Step 4: Simplify right side
    487,367.47x = 181,292,720,587.97
  5. Step 5: Solve for x
    x = 181,292,720,587.97/487,367.47
  6. Step 6: Final answer
    x = 371,983.63

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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.