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Finding the Fourth Proportional to 279,479.64, 385,557.30 and 188,806.44

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Solution

The fourth proportional to 279,479.64, 385,557.30 and 188,806.44 is: 260,468.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,479.64 : 385,557.30 = 188,806.44 : x
  2. Step 2: Convert to fraction form
    279,479.64/385,557.30 = 188,806.44/x
  3. Step 3: Cross multiply
    279,479.64x = 385,557.30 × 188,806.44
  4. Step 4: Simplify right side
    279,479.64x = 72,795,701,229.01
  5. Step 5: Solve for x
    x = 72,795,701,229.01/279,479.64
  6. Step 6: Final answer
    x = 260,468.71

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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.