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Finding the Fourth Proportional to 312,369.60, 468,550.26 and 75,714.36

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Solution

The fourth proportional to 312,369.60, 468,550.26 and 75,714.36 is: 113,570.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,369.60 : 468,550.26 = 75,714.36 : x
  2. Step 2: Convert to fraction form
    312,369.60/468,550.26 = 75,714.36/x
  3. Step 3: Cross multiply
    312,369.60x = 468,550.26 × 75,714.36
  4. Step 4: Simplify right side
    312,369.60x = 35,475,983,063.73
  5. Step 5: Solve for x
    x = 35,475,983,063.73/312,369.60
  6. Step 6: Final answer
    x = 113,570.54

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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.