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Finding the Fourth Proportional to 322,575.40, 483,939.90 and 135,490.60

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Solution

The fourth proportional to 322,575.40, 483,939.90 and 135,490.60 is: 203,268.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,575.40 : 483,939.90 = 135,490.60 : x
  2. Step 2: Convert to fraction form
    322,575.40/483,939.90 = 135,490.60/x
  3. Step 3: Cross multiply
    322,575.40x = 483,939.90 × 135,490.60
  4. Step 4: Simplify right side
    322,575.40x = 65,569,307,414.94
  5. Step 5: Solve for x
    x = 65,569,307,414.94/322,575.40
  6. Step 6: Final answer
    x = 203,268.16

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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.