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Finding the Fourth Proportional to 405,910.18, 608,793.99 and 125,429.86

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Solution

The fourth proportional to 405,910.18, 608,793.99 and 125,429.86 is: 188,122.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,910.18 : 608,793.99 = 125,429.86 : x
  2. Step 2: Convert to fraction form
    405,910.18/608,793.99 = 125,429.86/x
  3. Step 3: Cross multiply
    405,910.18x = 608,793.99 × 125,429.86
  4. Step 4: Simplify right side
    405,910.18x = 76,360,944,934.54
  5. Step 5: Solve for x
    x = 76,360,944,934.54/405,910.18
  6. Step 6: Final answer
    x = 188,122.76

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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.