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Finding the Third Proportional to 156,981 and 201,570

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Solution

The third proportional to 156,981 and 201,570 is: 258,824.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,981 : 201,570 = 201,570 : x
  2. Step 2: Convert to fraction form
    156,981/201,570 = 201,570/x
  3. Step 3: Cross multiply
    156,981x = 201,570 × 201,570
  4. Step 4: Simplify right side
    156,981x = 40,630,464,900
  5. Step 5: Solve for x
    x = 40,630,464,900/156,981
  6. Step 6: Final answer
    x = 258,824.09

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Why These Related Problems?

These problems maintain the same ratio (1.28) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.