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Finding the Third Proportional to 71,359 and 155,428

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Solution

The third proportional to 71,359 and 155,428 is: 338,539.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,359 : 155,428 = 155,428 : x
  2. Step 2: Convert to fraction form
    71,359/155,428 = 155,428/x
  3. Step 3: Cross multiply
    71,359x = 155,428 × 155,428
  4. Step 4: Simplify right side
    71,359x = 24,157,863,184
  5. Step 5: Solve for x
    x = 24,157,863,184/71,359
  6. Step 6: Final answer
    x = 338,539.82

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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.