Home / 312,886,053.57-431,804,577.90-206,855,249.70

Finding the Fourth Proportional to 312,886,053.57, 431,804,577.90 and 206,855,249.70

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Solution

The fourth proportional to 312,886,053.57, 431,804,577.90 and 206,855,249.70 is: 285,474,672.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,886,053.57 : 431,804,577.90 = 206,855,249.70 : x
  2. Step 2: Convert to fraction form
    312,886,053.57/431,804,577.90 = 206,855,249.70/x
  3. Step 3: Cross multiply
    312,886,053.57x = 431,804,577.90 × 206,855,249.70
  4. Step 4: Simplify right side
    312,886,053.57x = 89,321,043,783,107,584
  5. Step 5: Solve for x
    x = 89,321,043,783,107,584/312,886,053.57
  6. Step 6: Final answer
    x = 285,474,672.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.