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Finding the Fourth Proportional to 208,757.88, 313,184.58 and 90,448.92

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Solution

The fourth proportional to 208,757.88, 313,184.58 and 90,448.92 is: 135,694.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,757.88 : 313,184.58 = 90,448.92 : x
  2. Step 2: Convert to fraction form
    208,757.88/313,184.58 = 90,448.92/x
  3. Step 3: Cross multiply
    208,757.88x = 313,184.58 × 90,448.92
  4. Step 4: Simplify right side
    208,757.88x = 28,327,207,021.65
  5. Step 5: Solve for x
    x = 28,327,207,021.65/208,757.88
  6. Step 6: Final answer
    x = 135,694.07

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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.