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Finding the Fourth Proportional to 487,151.82, 672,242.36 and 269,347.88

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Solution

The fourth proportional to 487,151.82, 672,242.36 and 269,347.88 is: 371,685.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,151.82 : 672,242.36 = 269,347.88 : x
  2. Step 2: Convert to fraction form
    487,151.82/672,242.36 = 269,347.88/x
  3. Step 3: Cross multiply
    487,151.82x = 672,242.36 × 269,347.88
  4. Step 4: Simplify right side
    487,151.82x = 181,067,054,846.06
  5. Step 5: Solve for x
    x = 181,067,054,846.06/487,151.82
  6. Step 6: Final answer
    x = 371,685.06

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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.