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Finding the Fourth Proportional to 252,617.80, 378,051.90 and 231,622.60

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Solution

The fourth proportional to 252,617.80, 378,051.90 and 231,622.60 is: 346,631.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,617.80 : 378,051.90 = 231,622.60 : x
  2. Step 2: Convert to fraction form
    252,617.80/378,051.90 = 231,622.60/x
  3. Step 3: Cross multiply
    252,617.80x = 378,051.90 × 231,622.60
  4. Step 4: Simplify right side
    252,617.80x = 87,565,364,012.94
  5. Step 5: Solve for x
    x = 87,565,364,012.94/252,617.80
  6. Step 6: Final answer
    x = 346,631.81

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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.