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Finding the Fourth Proportional to 309,757.86, 427,717.94 and 252,405.81

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Solution

The fourth proportional to 309,757.86, 427,717.94 and 252,405.81 is: 348,525.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,757.86 : 427,717.94 = 252,405.81 : x
  2. Step 2: Convert to fraction form
    309,757.86/427,717.94 = 252,405.81/x
  3. Step 3: Cross multiply
    309,757.86x = 427,717.94 × 252,405.81
  4. Step 4: Simplify right side
    309,757.86x = 107,958,491,835.20
  5. Step 5: Solve for x
    x = 107,958,491,835.20/309,757.86
  6. Step 6: Final answer
    x = 348,525.43

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1.5x scale

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.