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Finding the Fourth Proportional to 280,058.70, 419,310.45 and 272,282.70

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Solution

The fourth proportional to 280,058.70, 419,310.45 and 272,282.70 is: 407,668.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,058.70 : 419,310.45 = 272,282.70 : x
  2. Step 2: Convert to fraction form
    280,058.70/419,310.45 = 272,282.70/x
  3. Step 3: Cross multiply
    280,058.70x = 419,310.45 × 272,282.70
  4. Step 4: Simplify right side
    280,058.70x = 114,170,981,464.22
  5. Step 5: Solve for x
    x = 114,170,981,464.22/280,058.70
  6. Step 6: Final answer
    x = 407,668.04

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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.