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Finding the Fourth Proportional to 311,441.85, 467,162.93 and 86,808.09

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Solution

The fourth proportional to 311,441.85, 467,162.93 and 86,808.09 is: 130,212.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,441.85 : 467,162.93 = 86,808.09 : x
  2. Step 2: Convert to fraction form
    311,441.85/467,162.93 = 86,808.09/x
  3. Step 3: Cross multiply
    311,441.85x = 467,162.93 × 86,808.09
  4. Step 4: Simplify right side
    311,441.85x = 40,553,522,989.92
  5. Step 5: Solve for x
    x = 40,553,522,989.92/311,441.85
  6. Step 6: Final answer
    x = 130,212.18

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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.