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Finding the Fourth Proportional to 371,997.34, 512,445.21 and 269,722.30

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Solution

The fourth proportional to 371,997.34, 512,445.21 and 269,722.30 is: 371,556.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,997.34 : 512,445.21 = 269,722.30 : x
  2. Step 2: Convert to fraction form
    371,997.34/512,445.21 = 269,722.30/x
  3. Step 3: Cross multiply
    371,997.34x = 512,445.21 × 269,722.30
  4. Step 4: Simplify right side
    371,997.34x = 138,217,900,665.18
  5. Step 5: Solve for x
    x = 138,217,900,665.18/371,997.34
  6. Step 6: Final answer
    x = 371,556.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.