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Finding the Fourth Proportional to 467,139.45, 644,652.39 and 252,279.48

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Solution

The fourth proportional to 467,139.45, 644,652.39 and 252,279.48 is: 348,145.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    467,139.45 : 644,652.39 = 252,279.48 : x
  2. Step 2: Convert to fraction form
    467,139.45/644,652.39 = 252,279.48/x
  3. Step 3: Cross multiply
    467,139.45x = 644,652.39 × 252,279.48
  4. Step 4: Simplify right side
    467,139.45x = 162,632,568,048.21
  5. Step 5: Solve for x
    x = 162,632,568,048.21/467,139.45
  6. Step 6: Final answer
    x = 348,145.65

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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.