Home / 431,815.68-647,460-178,896.96

Finding the Fourth Proportional to 431,815.68, 647,460 and 178,896.96

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Solution

The fourth proportional to 431,815.68, 647,460 and 178,896.96 is: 268,236.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,815.68 : 647,460 = 178,896.96 : x
  2. Step 2: Convert to fraction form
    431,815.68/647,460 = 178,896.96/x
  3. Step 3: Cross multiply
    431,815.68x = 647,460 × 178,896.96
  4. Step 4: Simplify right side
    431,815.68x = 115,828,625,721.60
  5. Step 5: Solve for x
    x = 115,828,625,721.60/431,815.68
  6. Step 6: Final answer
    x = 268,236.27

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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.