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Finding the Fourth Proportional to 323,987.31, 486,197.89 and 134,447.86

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Solution

The fourth proportional to 323,987.31, 486,197.89 and 134,447.86 is: 201,761.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,987.31 : 486,197.89 = 134,447.86 : x
  2. Step 2: Convert to fraction form
    323,987.31/486,197.89 = 134,447.86/x
  3. Step 3: Cross multiply
    323,987.31x = 486,197.89 × 134,447.86
  4. Step 4: Simplify right side
    323,987.31x = 65,368,266,118.64
  5. Step 5: Solve for x
    x = 65,368,266,118.64/323,987.31
  6. Step 6: Final answer
    x = 201,761.81

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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.