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Finding the Fourth Proportional to 543,987, 816,009.66 and 170,039.16

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Solution

The fourth proportional to 543,987, 816,009.66 and 170,039.16 is: 255,067.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,987 : 816,009.66 = 170,039.16 : x
  2. Step 2: Convert to fraction form
    543,987/816,009.66 = 170,039.16/x
  3. Step 3: Cross multiply
    543,987x = 816,009.66 × 170,039.16
  4. Step 4: Simplify right side
    543,987x = 138,753,597,138.29
  5. Step 5: Solve for x
    x = 138,753,597,138.29/543,987
  6. Step 6: Final answer
    x = 255,067.85

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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.