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Finding the Fourth Proportional to 279,624.39, 385,758.91 and 188,947.32

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Solution

The fourth proportional to 279,624.39, 385,758.91 and 188,947.32 is: 260,664.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,624.39 : 385,758.91 = 188,947.32 : x
  2. Step 2: Convert to fraction form
    279,624.39/385,758.91 = 188,947.32/x
  3. Step 3: Cross multiply
    279,624.39x = 385,758.91 × 188,947.32
  4. Step 4: Simplify right side
    279,624.39x = 72,888,109,937.38
  5. Step 5: Solve for x
    x = 72,888,109,937.38/279,624.39
  6. Step 6: Final answer
    x = 260,664.35

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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.