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Finding the Third Proportional to 211,153.50 and 459,486

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Solution

The third proportional to 211,153.50 and 459,486 is: 999,876.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,153.50 : 459,486 = 459,486 : x
  2. Step 2: Convert to fraction form
    211,153.50/459,486 = 459,486/x
  3. Step 3: Cross multiply
    211,153.50x = 459,486 × 459,486
  4. Step 4: Simplify right side
    211,153.50x = 211,127,384,196
  5. Step 5: Solve for x
    x = 211,127,384,196/211,153.50
  6. Step 6: Final answer
    x = 999,876.32

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.