Home / 312,886,028.56-431,804,543.39-206,855,224.56

Finding the Fourth Proportional to 312,886,028.56, 431,804,543.39 and 206,855,224.56

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Solution

The fourth proportional to 312,886,028.56, 431,804,543.39 and 206,855,224.56 is: 285,474,638.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,886,028.56 : 431,804,543.39 = 206,855,224.56 : x
  2. Step 2: Convert to fraction form
    312,886,028.56/431,804,543.39 = 206,855,224.56/x
  3. Step 3: Cross multiply
    312,886,028.56x = 431,804,543.39 × 206,855,224.56
  4. Step 4: Simplify right side
    312,886,028.56x = 89,321,025,788,966,704
  5. Step 5: Solve for x
    x = 89,321,025,788,966,704/312,886,028.56
  6. Step 6: Final answer
    x = 285,474,638.16

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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.