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Finding the Fourth Proportional to 372,502.81, 513,996.71 and 209,167.77

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Solution

The fourth proportional to 372,502.81, 513,996.71 and 209,167.77 is: 288,619.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,502.81 : 513,996.71 = 209,167.77 : x
  2. Step 2: Convert to fraction form
    372,502.81/513,996.71 = 209,167.77/x
  3. Step 3: Cross multiply
    372,502.81x = 513,996.71 × 209,167.77
  4. Step 4: Simplify right side
    372,502.81x = 107,511,545,618.04
  5. Step 5: Solve for x
    x = 107,511,545,618.04/372,502.81
  6. Step 6: Final answer
    x = 288,619.42

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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.