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Finding the Fourth Proportional to 208,453.01, 287,559.51 and 131,843.09

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Solution

The fourth proportional to 208,453.01, 287,559.51 and 131,843.09 is: 181,876.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,453.01 : 287,559.51 = 131,843.09 : x
  2. Step 2: Convert to fraction form
    208,453.01/287,559.51 = 131,843.09/x
  3. Step 3: Cross multiply
    208,453.01x = 287,559.51 × 131,843.09
  4. Step 4: Simplify right side
    208,453.01x = 37,912,732,919.49
  5. Step 5: Solve for x
    x = 37,912,732,919.49/208,453.01
  6. Step 6: Final answer
    x = 181,876.64

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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.