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Finding the Fourth Proportional to 451,026.96, 622,135.56 and 290,091.92

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Solution

The fourth proportional to 451,026.96, 622,135.56 and 290,091.92 is: 400,145.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,026.96 : 622,135.56 = 290,091.92 : x
  2. Step 2: Convert to fraction form
    451,026.96/622,135.56 = 290,091.92/x
  3. Step 3: Cross multiply
    451,026.96x = 622,135.56 × 290,091.92
  4. Step 4: Simplify right side
    451,026.96x = 180,476,499,100.68
  5. Step 5: Solve for x
    x = 180,476,499,100.68/451,026.96
  6. Step 6: Final answer
    x = 400,145.70

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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.