Home / 280,716.76-421,141.14-91,176.44

Finding the Fourth Proportional to 280,716.76, 421,141.14 and 91,176.44

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Solution

The fourth proportional to 280,716.76, 421,141.14 and 91,176.44 is: 136,786.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,716.76 : 421,141.14 = 91,176.44 : x
  2. Step 2: Convert to fraction form
    280,716.76/421,141.14 = 91,176.44/x
  3. Step 3: Cross multiply
    280,716.76x = 421,141.14 × 91,176.44
  4. Step 4: Simplify right side
    280,716.76x = 38,398,149,882.74
  5. Step 5: Solve for x
    x = 38,398,149,882.74/280,716.76
  6. Step 6: Final answer
    x = 136,786.10

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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.