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Finding the Third Proportional to 145,851 and 218,780

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Solution

The third proportional to 145,851 and 218,780 is: 328,175.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,851 : 218,780 = 218,780 : x
  2. Step 2: Convert to fraction form
    145,851/218,780 = 218,780/x
  3. Step 3: Cross multiply
    145,851x = 218,780 × 218,780
  4. Step 4: Simplify right side
    145,851x = 47,864,688,400
  5. Step 5: Solve for x
    x = 47,864,688,400/145,851
  6. Step 6: Final answer
    x = 328,175.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.