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Finding the Third Proportional to 156,926 and 201,490

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Solution

The third proportional to 156,926 and 201,490 is: 258,709.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,926 : 201,490 = 201,490 : x
  2. Step 2: Convert to fraction form
    156,926/201,490 = 201,490/x
  3. Step 3: Cross multiply
    156,926x = 201,490 × 201,490
  4. Step 4: Simplify right side
    156,926x = 40,598,220,100
  5. Step 5: Solve for x
    x = 40,598,220,100/156,926
  6. Step 6: Final answer
    x = 258,709.33

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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.