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Finding the Third Proportional to 66,498 and 143,430

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Solution

The third proportional to 66,498 and 143,430 is: 309,365.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,498 : 143,430 = 143,430 : x
  2. Step 2: Convert to fraction form
    66,498/143,430 = 143,430/x
  3. Step 3: Cross multiply
    66,498x = 143,430 × 143,430
  4. Step 4: Simplify right side
    66,498x = 20,572,164,900
  5. Step 5: Solve for x
    x = 20,572,164,900/66,498
  6. Step 6: Final answer
    x = 309,365.17

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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.