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Finding the Third Proportional to 100,585 and 209,355

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Solution

The third proportional to 100,585 and 209,355 is: 435,746.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,585 : 209,355 = 209,355 : x
  2. Step 2: Convert to fraction form
    100,585/209,355 = 209,355/x
  3. Step 3: Cross multiply
    100,585x = 209,355 × 209,355
  4. Step 4: Simplify right side
    100,585x = 43,829,516,025
  5. Step 5: Solve for x
    x = 43,829,516,025/100,585
  6. Step 6: Final answer
    x = 435,746.05

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.