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Finding the Third Proportional to 265,486.50 and 406,309.50

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Solution

The third proportional to 265,486.50 and 406,309.50 is: 621,829.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,486.50 : 406,309.50 = 406,309.50 : x
  2. Step 2: Convert to fraction form
    265,486.50/406,309.50 = 406,309.50/x
  3. Step 3: Cross multiply
    265,486.50x = 406,309.50 × 406,309.50
  4. Step 4: Simplify right side
    265,486.50x = 165,087,409,790.25
  5. Step 5: Solve for x
    x = 165,087,409,790.25/265,486.50
  6. Step 6: Final answer
    x = 621,829.77

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.