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Finding the Fourth Proportional to 275,668.50, 380,394.17 and 154,808.81

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Solution

The fourth proportional to 275,668.50, 380,394.17 and 154,808.81 is: 213,620.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,668.50 : 380,394.17 = 154,808.81 : x
  2. Step 2: Convert to fraction form
    275,668.50/380,394.17 = 154,808.81/x
  3. Step 3: Cross multiply
    275,668.50x = 380,394.17 × 154,808.81
  4. Step 4: Simplify right side
    275,668.50x = 58,888,368,788.64
  5. Step 5: Solve for x
    x = 58,888,368,788.64/275,668.50
  6. Step 6: Final answer
    x = 213,620.23

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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.