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Finding the Fourth Proportional to 394,757.48, 544,421.04 and 279,808.76

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Solution

The fourth proportional to 394,757.48, 544,421.04 and 279,808.76 is: 385,892.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,757.48 : 544,421.04 = 279,808.76 : x
  2. Step 2: Convert to fraction form
    394,757.48/544,421.04 = 279,808.76/x
  3. Step 3: Cross multiply
    394,757.48x = 544,421.04 × 279,808.76
  4. Step 4: Simplify right side
    394,757.48x = 152,333,776,120.31
  5. Step 5: Solve for x
    x = 152,333,776,120.31/394,757.48
  6. Step 6: Final answer
    x = 385,892.06

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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.