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Finding the Fourth Proportional to 263,999.40, 395,999.10 and 217,343.40

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Solution

The fourth proportional to 263,999.40, 395,999.10 and 217,343.40 is: 326,015.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,999.40 : 395,999.10 = 217,343.40 : x
  2. Step 2: Convert to fraction form
    263,999.40/395,999.10 = 217,343.40/x
  3. Step 3: Cross multiply
    263,999.40x = 395,999.10 × 217,343.40
  4. Step 4: Simplify right side
    263,999.40x = 86,067,790,790.94
  5. Step 5: Solve for x
    x = 86,067,790,790.94/263,999.40
  6. Step 6: Final answer
    x = 326,015.10

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1.5x scale

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.