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Finding the Fourth Proportional to 279,388.52, 385,728.42 and 192,322.28

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Solution

The fourth proportional to 279,388.52, 385,728.42 and 192,322.28 is: 265,523.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,388.52 : 385,728.42 = 192,322.28 : x
  2. Step 2: Convert to fraction form
    279,388.52/385,728.42 = 192,322.28/x
  3. Step 3: Cross multiply
    279,388.52x = 385,728.42 × 192,322.28
  4. Step 4: Simplify right side
    279,388.52x = 74,184,169,195.20
  5. Step 5: Solve for x
    x = 74,184,169,195.20/279,388.52
  6. Step 6: Final answer
    x = 265,523.33

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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.