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Finding the Third Proportional to 66,359 and 143,228

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Solution

The third proportional to 66,359 and 143,228 is: 309,140.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,359 : 143,228 = 143,228 : x
  2. Step 2: Convert to fraction form
    66,359/143,228 = 143,228/x
  3. Step 3: Cross multiply
    66,359x = 143,228 × 143,228
  4. Step 4: Simplify right side
    66,359x = 20,514,259,984
  5. Step 5: Solve for x
    x = 20,514,259,984/66,359
  6. Step 6: Final answer
    x = 309,140.58

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.