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Finding the Fourth Proportional to 394,676.32, 544,645.20 and 215,828.32

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Solution

The fourth proportional to 394,676.32, 544,645.20 and 215,828.32 is: 297,838.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,676.32 : 544,645.20 = 215,828.32 : x
  2. Step 2: Convert to fraction form
    394,676.32/544,645.20 = 215,828.32/x
  3. Step 3: Cross multiply
    394,676.32x = 544,645.20 × 215,828.32
  4. Step 4: Simplify right side
    394,676.32x = 117,549,858,512.06
  5. Step 5: Solve for x
    x = 117,549,858,512.06/394,676.32
  6. Step 6: Final answer
    x = 297,838.64

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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.