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Finding the Third Proportional to 72,472 and 155,658

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Solution

The third proportional to 72,472 and 155,658 is: 334,327.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,472 : 155,658 = 155,658 : x
  2. Step 2: Convert to fraction form
    72,472/155,658 = 155,658/x
  3. Step 3: Cross multiply
    72,472x = 155,658 × 155,658
  4. Step 4: Simplify right side
    72,472x = 24,229,412,964
  5. Step 5: Solve for x
    x = 24,229,412,964/72,472
  6. Step 6: Final answer
    x = 334,327.92

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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.