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Finding the Fourth Proportional to 515,169.42, 772,208.72 and 173,287.38

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Solution

The fourth proportional to 515,169.42, 772,208.72 and 173,287.38 is: 259,747.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,169.42 : 772,208.72 = 173,287.38 : x
  2. Step 2: Convert to fraction form
    515,169.42/772,208.72 = 173,287.38/x
  3. Step 3: Cross multiply
    515,169.42x = 772,208.72 × 173,287.38
  4. Step 4: Simplify right side
    515,169.42x = 133,814,022,789.56
  5. Step 5: Solve for x
    x = 133,814,022,789.56/515,169.42
  6. Step 6: Final answer
    x = 259,747.61

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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.