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Finding the Third Proportional to 142,323 and 306,639

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Solution

The third proportional to 142,323 and 306,639 is: 660,662.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,323 : 306,639 = 306,639 : x
  2. Step 2: Convert to fraction form
    142,323/306,639 = 306,639/x
  3. Step 3: Cross multiply
    142,323x = 306,639 × 306,639
  4. Step 4: Simplify right side
    142,323x = 94,027,476,321
  5. Step 5: Solve for x
    x = 94,027,476,321/142,323
  6. Step 6: Final answer
    x = 660,662.55

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.