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Finding the Fourth Proportional to 279,140.72, 385,213.12 and 151,818.44

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Solution

The fourth proportional to 279,140.72, 385,213.12 and 151,818.44 is: 209,508.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,140.72 : 385,213.12 = 151,818.44 : x
  2. Step 2: Convert to fraction form
    279,140.72/385,213.12 = 151,818.44/x
  3. Step 3: Cross multiply
    279,140.72x = 385,213.12 × 151,818.44
  4. Step 4: Simplify right side
    279,140.72x = 58,482,452,640.32
  5. Step 5: Solve for x
    x = 58,482,452,640.32/279,140.72
  6. Step 6: Final answer
    x = 209,508.86

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