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Finding the Fourth Proportional to 265,905.80, 399,076.30 and 263,832.20

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Solution

The fourth proportional to 265,905.80, 399,076.30 and 263,832.20 is: 395,964.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,905.80 : 399,076.30 = 263,832.20 : x
  2. Step 2: Convert to fraction form
    265,905.80/399,076.30 = 263,832.20/x
  3. Step 3: Cross multiply
    265,905.80x = 399,076.30 × 263,832.20
  4. Step 4: Simplify right side
    265,905.80x = 105,289,178,196.86
  5. Step 5: Solve for x
    x = 105,289,178,196.86/265,905.80
  6. Step 6: Final answer
    x = 395,964.20

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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.