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Finding the Third Proportional to 145,617 and 218,209.50

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Solution

The third proportional to 145,617 and 218,209.50 is: 326,990.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,617 : 218,209.50 = 218,209.50 : x
  2. Step 2: Convert to fraction form
    145,617/218,209.50 = 218,209.50/x
  3. Step 3: Cross multiply
    145,617x = 218,209.50 × 218,209.50
  4. Step 4: Simplify right side
    145,617x = 47,615,385,890.25
  5. Step 5: Solve for x
    x = 47,615,385,890.25/145,617
  6. Step 6: Final answer
    x = 326,990.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.