Home / 287,912.26-431,868.39-147,581.38

Finding the Fourth Proportional to 287,912.26, 431,868.39 and 147,581.38

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Solution

The fourth proportional to 287,912.26, 431,868.39 and 147,581.38 is: 221,372.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,912.26 : 431,868.39 = 147,581.38 : x
  2. Step 2: Convert to fraction form
    287,912.26/431,868.39 = 147,581.38/x
  3. Step 3: Cross multiply
    287,912.26x = 431,868.39 × 147,581.38
  4. Step 4: Simplify right side
    287,912.26x = 63,735,732,974.58
  5. Step 5: Solve for x
    x = 63,735,732,974.58/287,912.26
  6. Step 6: Final answer
    x = 221,372.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.