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Finding the Fourth Proportional to 207,382.20, 311,130.90 and 89,110.20

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Solution

The fourth proportional to 207,382.20, 311,130.90 and 89,110.20 is: 133,690.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,382.20 : 311,130.90 = 89,110.20 : x
  2. Step 2: Convert to fraction form
    207,382.20/311,130.90 = 89,110.20/x
  3. Step 3: Cross multiply
    207,382.20x = 311,130.90 × 89,110.20
  4. Step 4: Simplify right side
    207,382.20x = 27,724,936,725.18
  5. Step 5: Solve for x
    x = 27,724,936,725.18/207,382.20
  6. Step 6: Final answer
    x = 133,690.05

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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.