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Finding the Fourth Proportional to 394,999.29, 592,449 and 125,154.81

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Solution

The fourth proportional to 394,999.29, 592,449 and 125,154.81 is: 187,716.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,999.29 : 592,449 = 125,154.81 : x
  2. Step 2: Convert to fraction form
    394,999.29/592,449 = 125,154.81/x
  3. Step 3: Cross multiply
    394,999.29x = 592,449 × 125,154.81
  4. Step 4: Simplify right side
    394,999.29x = 74,147,842,029.69
  5. Step 5: Solve for x
    x = 74,147,842,029.69/394,999.29
  6. Step 6: Final answer
    x = 187,716.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.