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Finding the Fourth Proportional to 281,693.39, 388,739.94 and 154,366.25

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Solution

The fourth proportional to 281,693.39, 388,739.94 and 154,366.25 is: 213,027.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,693.39 : 388,739.94 = 154,366.25 : x
  2. Step 2: Convert to fraction form
    281,693.39/388,739.94 = 154,366.25/x
  3. Step 3: Cross multiply
    281,693.39x = 388,739.94 × 154,366.25
  4. Step 4: Simplify right side
    281,693.39x = 60,008,326,763.03
  5. Step 5: Solve for x
    x = 60,008,326,763.03/281,693.39
  6. Step 6: Final answer
    x = 213,027.10

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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.