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Finding the Fourth Proportional to 311,512.87, 467,262.60 and 86,867.32

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Solution

The fourth proportional to 311,512.87, 467,262.60 and 86,867.32 is: 130,299.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,512.87 : 467,262.60 = 86,867.32 : x
  2. Step 2: Convert to fraction form
    311,512.87/467,262.60 = 86,867.32/x
  3. Step 3: Cross multiply
    311,512.87x = 467,262.60 × 86,867.32
  4. Step 4: Simplify right side
    311,512.87x = 40,589,849,798.23
  5. Step 5: Solve for x
    x = 40,589,849,798.23/311,512.87
  6. Step 6: Final answer
    x = 130,299.11

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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.