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Finding the Third Proportional to 221,664 and 324,637.50

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Solution

The third proportional to 221,664 and 324,637.50 is: 475,447.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,664 : 324,637.50 = 324,637.50 : x
  2. Step 2: Convert to fraction form
    221,664/324,637.50 = 324,637.50/x
  3. Step 3: Cross multiply
    221,664x = 324,637.50 × 324,637.50
  4. Step 4: Simplify right side
    221,664x = 105,389,506,406.25
  5. Step 5: Solve for x
    x = 105,389,506,406.25/221,664
  6. Step 6: Final answer
    x = 475,447.10

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.