Home / 279,250.11-418,736.79-99,308.57

Finding the Fourth Proportional to 279,250.11, 418,736.79 and 99,308.57

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Solution

The fourth proportional to 279,250.11, 418,736.79 and 99,308.57 is: 148,913.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,250.11 : 418,736.79 = 99,308.57 : x
  2. Step 2: Convert to fraction form
    279,250.11/418,736.79 = 99,308.57/x
  3. Step 3: Cross multiply
    279,250.11x = 418,736.79 × 99,308.57
  4. Step 4: Simplify right side
    279,250.11x = 41,584,149,727.61
  5. Step 5: Solve for x
    x = 41,584,149,727.61/279,250.11
  6. Step 6: Final answer
    x = 148,913.64

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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.