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Finding the Fourth Proportional to 279,166.62, 385,214.97 and 188,719.38

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Solution

The fourth proportional to 279,166.62, 385,214.97 and 188,719.38 is: 260,409.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,166.62 : 385,214.97 = 188,719.38 : x
  2. Step 2: Convert to fraction form
    279,166.62/385,214.97 = 188,719.38/x
  3. Step 3: Cross multiply
    279,166.62x = 385,214.97 × 188,719.38
  4. Step 4: Simplify right side
    279,166.62x = 72,697,530,305.12
  5. Step 5: Solve for x
    x = 72,697,530,305.12/279,166.62
  6. Step 6: Final answer
    x = 260,409.11

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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.