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Finding the Fourth Proportional to 328,581.82, 492,872.88 and 138,993.04

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Solution

The fourth proportional to 328,581.82, 492,872.88 and 138,993.04 is: 208,489.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,581.82 : 492,872.88 = 138,993.04 : x
  2. Step 2: Convert to fraction form
    328,581.82/492,872.88 = 138,993.04/x
  3. Step 3: Cross multiply
    328,581.82x = 492,872.88 × 138,993.04
  4. Step 4: Simplify right side
    328,581.82x = 68,505,899,924.76
  5. Step 5: Solve for x
    x = 68,505,899,924.76/328,581.82
  6. Step 6: Final answer
    x = 208,489.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.