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Finding the Third Proportional to 123,859.13 and 221,332.50

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Solution

The third proportional to 123,859.13 and 221,332.50 is: 395,514.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,859.13 : 221,332.50 = 221,332.50 : x
  2. Step 2: Convert to fraction form
    123,859.13/221,332.50 = 221,332.50/x
  3. Step 3: Cross multiply
    123,859.13x = 221,332.50 × 221,332.50
  4. Step 4: Simplify right side
    123,859.13x = 48,988,075,556.25
  5. Step 5: Solve for x
    x = 48,988,075,556.25/123,859.13
  6. Step 6: Final answer
    x = 395,514.46

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Why These Related Problems?

These problems maintain the same ratio (1.79) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.