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Finding the Fourth Proportional to 280,614.88, 421,026.89 and 168,375.65

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Solution

The fourth proportional to 280,614.88, 421,026.89 and 168,375.65 is: 252,626.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,614.88 : 421,026.89 = 168,375.65 : x
  2. Step 2: Convert to fraction form
    280,614.88/421,026.89 = 168,375.65/x
  3. Step 3: Cross multiply
    280,614.88x = 421,026.89 × 168,375.65
  4. Step 4: Simplify right side
    280,614.88x = 70,890,675,429.35
  5. Step 5: Solve for x
    x = 70,890,675,429.35/280,614.88
  6. Step 6: Final answer
    x = 252,626.22

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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.