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Finding the Third Proportional to 161,017 and 378,866.50

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Solution

The third proportional to 161,017 and 378,866.50 is: 891,457.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,017 : 378,866.50 = 378,866.50 : x
  2. Step 2: Convert to fraction form
    161,017/378,866.50 = 378,866.50/x
  3. Step 3: Cross multiply
    161,017x = 378,866.50 × 378,866.50
  4. Step 4: Simplify right side
    161,017x = 143,539,824,822.25
  5. Step 5: Solve for x
    x = 143,539,824,822.25/161,017
  6. Step 6: Final answer
    x = 891,457.58

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Why These Related Problems?

These problems maintain the same ratio (2.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.