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Finding the Fourth Proportional to 311,520.21, 467,273.59 and 86,874.65

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Solution

The fourth proportional to 311,520.21, 467,273.59 and 86,874.65 is: 130,310.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,520.21 : 467,273.59 = 86,874.65 : x
  2. Step 2: Convert to fraction form
    311,520.21/467,273.59 = 86,874.65/x
  3. Step 3: Cross multiply
    311,520.21x = 467,273.59 × 86,874.65
  4. Step 4: Simplify right side
    311,520.21x = 40,594,228,784.21
  5. Step 5: Solve for x
    x = 40,594,228,784.21/311,520.21
  6. Step 6: Final answer
    x = 130,310.10

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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.