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Finding the Fourth Proportional to 207,490.08, 311,169.84 and 67,216.16

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Solution

The fourth proportional to 207,490.08, 311,169.84 and 67,216.16 is: 100,803.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,490.08 : 311,169.84 = 67,216.16 : x
  2. Step 2: Convert to fraction form
    207,490.08/311,169.84 = 67,216.16/x
  3. Step 3: Cross multiply
    207,490.08x = 311,169.84 × 67,216.16
  4. Step 4: Simplify right side
    207,490.08x = 20,915,641,752.61
  5. Step 5: Solve for x
    x = 20,915,641,752.61/207,490.08
  6. Step 6: Final answer
    x = 100,803.09

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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.