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Finding the Fourth Proportional to 285,544.54, 394,045.59 and 158,219.02

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Solution

The fourth proportional to 285,544.54, 394,045.59 and 158,219.02 is: 218,338.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,544.54 : 394,045.59 = 158,219.02 : x
  2. Step 2: Convert to fraction form
    285,544.54/394,045.59 = 158,219.02/x
  3. Step 3: Cross multiply
    285,544.54x = 394,045.59 × 158,219.02
  4. Step 4: Simplify right side
    285,544.54x = 62,345,507,085.12
  5. Step 5: Solve for x
    x = 62,345,507,085.12/285,544.54
  6. Step 6: Final answer
    x = 218,338.99

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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.