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Finding the Fourth Proportional to 401,432.72, 602,149.08 and 135,170.94

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Solution

The fourth proportional to 401,432.72, 602,149.08 and 135,170.94 is: 202,756.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,432.72 : 602,149.08 = 135,170.94 : x
  2. Step 2: Convert to fraction form
    401,432.72/602,149.08 = 135,170.94/x
  3. Step 3: Cross multiply
    401,432.72x = 602,149.08 × 135,170.94
  4. Step 4: Simplify right side
    401,432.72x = 81,393,057,163.74
  5. Step 5: Solve for x
    x = 81,393,057,163.74/401,432.72
  6. Step 6: Final answer
    x = 202,756.41

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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.