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Finding the Fourth Proportional to 311,340.05, 467,022.38 and 86,720.12

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Solution

The fourth proportional to 311,340.05, 467,022.38 and 86,720.12 is: 130,083.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,340.05 : 467,022.38 = 86,720.12 : x
  2. Step 2: Convert to fraction form
    311,340.05/467,022.38 = 86,720.12/x
  3. Step 3: Cross multiply
    311,340.05x = 467,022.38 × 86,720.12
  4. Step 4: Simplify right side
    311,340.05x = 40,500,236,306.71
  5. Step 5: Solve for x
    x = 40,500,236,306.71/311,340.05
  6. Step 6: Final answer
    x = 130,083.60

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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.