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Finding the Third Proportional to 207,316 and 311,136

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Solution

The third proportional to 207,316 and 311,136 is: 466,947.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,316 : 311,136 = 311,136 : x
  2. Step 2: Convert to fraction form
    207,316/311,136 = 311,136/x
  3. Step 3: Cross multiply
    207,316x = 311,136 × 311,136
  4. Step 4: Simplify right side
    207,316x = 96,805,610,496
  5. Step 5: Solve for x
    x = 96,805,610,496/207,316
  6. Step 6: Final answer
    x = 466,947.13

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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.