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Finding the Fourth Proportional to 372,448.39, 513,943.21 and 209,067.47

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Solution

The fourth proportional to 372,448.39, 513,943.21 and 209,067.47 is: 288,493.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,448.39 : 513,943.21 = 209,067.47 : x
  2. Step 2: Convert to fraction form
    372,448.39/513,943.21 = 209,067.47/x
  3. Step 3: Cross multiply
    372,448.39x = 513,943.21 × 209,067.47
  4. Step 4: Simplify right side
    372,448.39x = 107,448,806,638.38
  5. Step 5: Solve for x
    x = 107,448,806,638.38/372,448.39
  6. Step 6: Final answer
    x = 288,493.14

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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.