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Finding the Third Proportional to 212,480 and 459,808

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Solution

The third proportional to 212,480 and 459,808 is: 995,027.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,480 : 459,808 = 459,808 : x
  2. Step 2: Convert to fraction form
    212,480/459,808 = 459,808/x
  3. Step 3: Cross multiply
    212,480x = 459,808 × 459,808
  4. Step 4: Simplify right side
    212,480x = 211,423,396,864
  5. Step 5: Solve for x
    x = 211,423,396,864/212,480
  6. Step 6: Final answer
    x = 995,027.28

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.