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Finding the Fourth Proportional to 279,114.90, 418,672.35 and 264,680.70

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Solution

The fourth proportional to 279,114.90, 418,672.35 and 264,680.70 is: 397,021.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,114.90 : 418,672.35 = 264,680.70 : x
  2. Step 2: Convert to fraction form
    279,114.90/418,672.35 = 264,680.70/x
  3. Step 3: Cross multiply
    279,114.90x = 418,672.35 × 264,680.70
  4. Step 4: Simplify right side
    279,114.90x = 110,814,490,668.65
  5. Step 5: Solve for x
    x = 110,814,490,668.65/279,114.90
  6. Step 6: Final answer
    x = 397,021.05

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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.