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Finding the Fourth Proportional to 423,606.12, 635,268.24 and 170,821.32

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Solution

The fourth proportional to 423,606.12, 635,268.24 and 170,821.32 is: 256,175.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,606.12 : 635,268.24 = 170,821.32 : x
  2. Step 2: Convert to fraction form
    423,606.12/635,268.24 = 170,821.32/x
  3. Step 3: Cross multiply
    423,606.12x = 635,268.24 × 170,821.32
  4. Step 4: Simplify right side
    423,606.12x = 108,517,359,310.88
  5. Step 5: Solve for x
    x = 108,517,359,310.88/423,606.12
  6. Step 6: Final answer
    x = 256,175.15

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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.