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Finding the Fourth Proportional to 285,463.53, 393,910.97 and 158,115.33

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Solution

The fourth proportional to 285,463.53, 393,910.97 and 158,115.33 is: 218,183.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,463.53 : 393,910.97 = 158,115.33 : x
  2. Step 2: Convert to fraction form
    285,463.53/393,910.97 = 158,115.33/x
  3. Step 3: Cross multiply
    285,463.53x = 393,910.97 × 158,115.33
  4. Step 4: Simplify right side
    285,463.53x = 62,283,362,221.59
  5. Step 5: Solve for x
    x = 62,283,362,221.59/285,463.53
  6. Step 6: Final answer
    x = 218,183.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.