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Finding the Fourth Proportional to 312,650.08, 468,979.73 and 99,450.90

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Solution

The fourth proportional to 312,650.08, 468,979.73 and 99,450.90 is: 149,177.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,650.08 : 468,979.73 = 99,450.90 : x
  2. Step 2: Convert to fraction form
    312,650.08/468,979.73 = 99,450.90/x
  3. Step 3: Cross multiply
    312,650.08x = 468,979.73 × 99,450.90
  4. Step 4: Simplify right side
    312,650.08x = 46,640,456,230.26
  5. Step 5: Solve for x
    x = 46,640,456,230.26/312,650.08
  6. Step 6: Final answer
    x = 149,177.82

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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.