Home / 287,554.97-431,126.17-109,912.25

Finding the Fourth Proportional to 287,554.97, 431,126.17 and 109,912.25

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Solution

The fourth proportional to 287,554.97, 431,126.17 and 109,912.25 is: 164,789.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,554.97 : 431,126.17 = 109,912.25 : x
  2. Step 2: Convert to fraction form
    287,554.97/431,126.17 = 109,912.25/x
  3. Step 3: Cross multiply
    287,554.97x = 431,126.17 × 109,912.25
  4. Step 4: Simplify right side
    287,554.97x = 47,386,047,378.58
  5. Step 5: Solve for x
    x = 47,386,047,378.58/287,554.97
  6. Step 6: Final answer
    x = 164,789.53

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1.5x scale

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.