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Finding the Third Proportional to 208,355.63 and 311,161.50

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Solution

The third proportional to 208,355.63 and 311,161.50 is: 464,693.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,355.63 : 311,161.50 = 311,161.50 : x
  2. Step 2: Convert to fraction form
    208,355.63/311,161.50 = 311,161.50/x
  3. Step 3: Cross multiply
    208,355.63x = 311,161.50 × 311,161.50
  4. Step 4: Simplify right side
    208,355.63x = 96,821,479,082.25
  5. Step 5: Solve for x
    x = 96,821,479,082.25/208,355.63
  6. Step 6: Final answer
    x = 464,693.38

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.