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Finding the Fourth Proportional to 372,448.89, 513,943.89 and 209,067.98

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Solution

The fourth proportional to 372,448.89, 513,943.89 and 209,067.98 is: 288,493.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,448.89 : 513,943.89 = 209,067.98 : x
  2. Step 2: Convert to fraction form
    372,448.89/513,943.89 = 209,067.98/x
  3. Step 3: Cross multiply
    372,448.89x = 513,943.89 × 209,067.98
  4. Step 4: Simplify right side
    372,448.89x = 107,449,208,345.92
  5. Step 5: Solve for x
    x = 107,449,208,345.92/372,448.89
  6. Step 6: Final answer
    x = 288,493.83

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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.