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Finding the Third Proportional to 99,528 and 218,704

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Solution

The third proportional to 99,528 and 218,704 is: 480,582.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,528 : 218,704 = 218,704 : x
  2. Step 2: Convert to fraction form
    99,528/218,704 = 218,704/x
  3. Step 3: Cross multiply
    99,528x = 218,704 × 218,704
  4. Step 4: Simplify right side
    99,528x = 47,831,439,616
  5. Step 5: Solve for x
    x = 47,831,439,616/99,528
  6. Step 6: Final answer
    x = 480,582.75

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.