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Finding the Fourth Proportional to 371,987.33, 513,306.52 and 208,650.29

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Solution

The fourth proportional to 371,987.33, 513,306.52 and 208,650.29 is: 287,917.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,987.33 : 513,306.52 = 208,650.29 : x
  2. Step 2: Convert to fraction form
    371,987.33/513,306.52 = 208,650.29/x
  3. Step 3: Cross multiply
    371,987.33x = 513,306.52 × 208,650.29
  4. Step 4: Simplify right side
    371,987.33x = 107,101,551,168.73
  5. Step 5: Solve for x
    x = 107,101,551,168.73/371,987.33
  6. Step 6: Final answer
    x = 287,917.21

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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.