Home / 279,129.57-385,286.52-158,351.14

Finding the Fourth Proportional to 279,129.57, 385,286.52 and 158,351.14

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Solution

The fourth proportional to 279,129.57, 385,286.52 and 158,351.14 is: 218,574.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,129.57 : 385,286.52 = 158,351.14 : x
  2. Step 2: Convert to fraction form
    279,129.57/385,286.52 = 158,351.14/x
  3. Step 3: Cross multiply
    279,129.57x = 385,286.52 × 158,351.14
  4. Step 4: Simplify right side
    279,129.57x = 61,010,559,668.63
  5. Step 5: Solve for x
    x = 61,010,559,668.63/279,129.57
  6. Step 6: Final answer
    x = 218,574.33

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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.