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Finding the Third Proportional to 71,429 and 155,557

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Solution

The third proportional to 71,429 and 155,557 is: 338,769.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,429 : 155,557 = 155,557 : x
  2. Step 2: Convert to fraction form
    71,429/155,557 = 155,557/x
  3. Step 3: Cross multiply
    71,429x = 155,557 × 155,557
  4. Step 4: Simplify right side
    71,429x = 24,197,980,249
  5. Step 5: Solve for x
    x = 24,197,980,249/71,429
  6. Step 6: Final answer
    x = 338,769.69

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.