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Finding the Fourth Proportional to 405,381, 608,169.93 and 124,898.25

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Solution

The fourth proportional to 405,381, 608,169.93 and 124,898.25 is: 187,377.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,381 : 608,169.93 = 124,898.25 : x
  2. Step 2: Convert to fraction form
    405,381/608,169.93 = 124,898.25/x
  3. Step 3: Cross multiply
    405,381x = 608,169.93 × 124,898.25
  4. Step 4: Simplify right side
    405,381x = 75,959,359,959.62
  5. Step 5: Solve for x
    x = 75,959,359,959.62/405,381
  6. Step 6: Final answer
    x = 187,377.70

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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.