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Finding the Third Proportional to 172,417.50 and 375,873

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Solution

The third proportional to 172,417.50 and 375,873 is: 819,409.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,417.50 : 375,873 = 375,873 : x
  2. Step 2: Convert to fraction form
    172,417.50/375,873 = 375,873/x
  3. Step 3: Cross multiply
    172,417.50x = 375,873 × 375,873
  4. Step 4: Simplify right side
    172,417.50x = 141,280,512,129
  5. Step 5: Solve for x
    x = 141,280,512,129/172,417.50
  6. Step 6: Final answer
    x = 819,409.35

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.