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Finding the Fourth Proportional to 371,801.73, 513,085.02 and 210,687.57

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Solution

The fourth proportional to 371,801.73, 513,085.02 and 210,687.57 is: 290,748.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,801.73 : 513,085.02 = 210,687.57 : x
  2. Step 2: Convert to fraction form
    371,801.73/513,085.02 = 210,687.57/x
  3. Step 3: Cross multiply
    371,801.73x = 513,085.02 × 210,687.57
  4. Step 4: Simplify right side
    371,801.73x = 108,100,636,067.20
  5. Step 5: Solve for x
    x = 108,100,636,067.20/371,801.73
  6. Step 6: Final answer
    x = 290,748.07

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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.