Home / 259,213.26-388,819.90-81,734.11

Finding the Fourth Proportional to 259,213.26, 388,819.90 and 81,734.11

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Solution

The fourth proportional to 259,213.26, 388,819.90 and 81,734.11 is: 122,601.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,213.26 : 388,819.90 = 81,734.11 : x
  2. Step 2: Convert to fraction form
    259,213.26/388,819.90 = 81,734.11/x
  3. Step 3: Cross multiply
    259,213.26x = 388,819.90 × 81,734.11
  4. Step 4: Simplify right side
    259,213.26x = 31,779,849,334.26
  5. Step 5: Solve for x
    x = 31,779,849,334.26/259,213.26
  6. Step 6: Final answer
    x = 122,601.17

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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.