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Finding the Fourth Proportional to 259,252.88, 388,887.72 and 81,761.60

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Solution

The fourth proportional to 259,252.88, 388,887.72 and 81,761.60 is: 122,645.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,252.88 : 388,887.72 = 81,761.60 : x
  2. Step 2: Convert to fraction form
    259,252.88/388,887.72 = 81,761.60/x
  3. Step 3: Cross multiply
    259,252.88x = 388,887.72 × 81,761.60
  4. Step 4: Simplify right side
    259,252.88x = 31,796,082,207.55
  5. Step 5: Solve for x
    x = 31,796,082,207.55/259,252.88
  6. Step 6: Final answer
    x = 122,645.05

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1.5x scale

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.