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Finding the Fourth Proportional to 252,007.98, 378,085.80 and 74,519.60

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Solution

The fourth proportional to 252,007.98, 378,085.80 and 74,519.60 is: 111,801.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,007.98 : 378,085.80 = 74,519.60 : x
  2. Step 2: Convert to fraction form
    252,007.98/378,085.80 = 74,519.60/x
  3. Step 3: Cross multiply
    252,007.98x = 378,085.80 × 74,519.60
  4. Step 4: Simplify right side
    252,007.98x = 28,174,802,581.68
  5. Step 5: Solve for x
    x = 28,174,802,581.68/252,007.98
  6. Step 6: Final answer
    x = 111,801.23

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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.