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Finding the Fourth Proportional to 481,186, 664,036.68 and 280,115.92

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Solution

The fourth proportional to 481,186, 664,036.68 and 280,115.92 is: 386,559.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,186 : 664,036.68 = 280,115.92 : x
  2. Step 2: Convert to fraction form
    481,186/664,036.68 = 280,115.92/x
  3. Step 3: Cross multiply
    481,186x = 664,036.68 × 280,115.92
  4. Step 4: Simplify right side
    481,186x = 186,007,245,531.95
  5. Step 5: Solve for x
    x = 186,007,245,531.95/481,186
  6. Step 6: Final answer
    x = 386,559.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.