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Finding the Fourth Proportional to 281,212.48, 388,072.92 and 158,696.74

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Solution

The fourth proportional to 281,212.48, 388,072.92 and 158,696.74 is: 219,001.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,212.48 : 388,072.92 = 158,696.74 : x
  2. Step 2: Convert to fraction form
    281,212.48/388,072.92 = 158,696.74/x
  3. Step 3: Cross multiply
    281,212.48x = 388,072.92 × 158,696.74
  4. Step 4: Simplify right side
    281,212.48x = 61,585,907,286.28
  5. Step 5: Solve for x
    x = 61,585,907,286.28/281,212.48
  6. Step 6: Final answer
    x = 219,001.33

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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.