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Finding the Third Proportional to 70,447.50 and 156,636

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Solution

The third proportional to 70,447.50 and 156,636 is: 348,271.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,447.50 : 156,636 = 156,636 : x
  2. Step 2: Convert to fraction form
    70,447.50/156,636 = 156,636/x
  3. Step 3: Cross multiply
    70,447.50x = 156,636 × 156,636
  4. Step 4: Simplify right side
    70,447.50x = 24,534,836,496
  5. Step 5: Solve for x
    x = 24,534,836,496/70,447.50
  6. Step 6: Final answer
    x = 348,271.22

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Why These Related Problems?

These problems maintain the same ratio (2.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.