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Finding the Third Proportional to 213,280 and 459,608

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Solution

The third proportional to 213,280 and 459,608 is: 990,432.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,280 : 459,608 = 459,608 : x
  2. Step 2: Convert to fraction form
    213,280/459,608 = 459,608/x
  3. Step 3: Cross multiply
    213,280x = 459,608 × 459,608
  4. Step 4: Simplify right side
    213,280x = 211,239,513,664
  5. Step 5: Solve for x
    x = 211,239,513,664/213,280
  6. Step 6: Final answer
    x = 990,432.83

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.