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Finding the Fourth Proportional to 401,871.35, 602,387.69 and 135,540.29

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Solution

The fourth proportional to 401,871.35, 602,387.69 and 135,540.29 is: 203,169.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,871.35 : 602,387.69 = 135,540.29 : x
  2. Step 2: Convert to fraction form
    401,871.35/602,387.69 = 135,540.29/x
  3. Step 3: Cross multiply
    401,871.35x = 602,387.69 × 135,540.29
  4. Step 4: Simplify right side
    401,871.35x = 81,647,798,505.39
  5. Step 5: Solve for x
    x = 81,647,798,505.39/401,871.35
  6. Step 6: Final answer
    x = 203,169.00

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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.