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Finding the Fourth Proportional to 439,673, 606,748.78 and 248,682.28

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Solution

The fourth proportional to 439,673, 606,748.78 and 248,682.28 is: 343,181.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,673 : 606,748.78 = 248,682.28 : x
  2. Step 2: Convert to fraction form
    439,673/606,748.78 = 248,682.28/x
  3. Step 3: Cross multiply
    439,673x = 606,748.78 × 248,682.28
  4. Step 4: Simplify right side
    439,673x = 150,887,669,997.62
  5. Step 5: Solve for x
    x = 150,887,669,997.62/439,673
  6. Step 6: Final answer
    x = 343,181.57

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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.