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Finding the Fourth Proportional to 394,788.92, 544,168.84 and 308,595.60

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Solution

The fourth proportional to 394,788.92, 544,168.84 and 308,595.60 is: 425,361.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,788.92 : 544,168.84 = 308,595.60 : x
  2. Step 2: Convert to fraction form
    394,788.92/544,168.84 = 308,595.60/x
  3. Step 3: Cross multiply
    394,788.92x = 544,168.84 × 308,595.60
  4. Step 4: Simplify right side
    394,788.92x = 167,928,109,681.10
  5. Step 5: Solve for x
    x = 167,928,109,681.10/394,788.92
  6. Step 6: Final answer
    x = 425,361.76

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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.