Home / 287,640.33-431,522.78-110,147.35

Finding the Fourth Proportional to 287,640.33, 431,522.78 and 110,147.35

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Solution

The fourth proportional to 287,640.33, 431,522.78 and 110,147.35 is: 165,244.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,640.33 : 431,522.78 = 110,147.35 : x
  2. Step 2: Convert to fraction form
    287,640.33/431,522.78 = 110,147.35/x
  3. Step 3: Cross multiply
    287,640.33x = 431,522.78 × 110,147.35
  4. Step 4: Simplify right side
    287,640.33x = 47,531,088,242.98
  5. Step 5: Solve for x
    x = 47,531,088,242.98/287,640.33
  6. Step 6: Final answer
    x = 165,244.87

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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.