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Finding the Fourth Proportional to 259,094.88, 388,755.41 and 90,736.07

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Solution

The fourth proportional to 259,094.88, 388,755.41 and 90,736.07 is: 136,143.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,094.88 : 388,755.41 = 90,736.07 : x
  2. Step 2: Convert to fraction form
    259,094.88/388,755.41 = 90,736.07/x
  3. Step 3: Cross multiply
    259,094.88x = 388,755.41 × 90,736.07
  4. Step 4: Simplify right side
    259,094.88x = 35,274,135,697.18
  5. Step 5: Solve for x
    x = 35,274,135,697.18/259,094.88
  6. Step 6: Final answer
    x = 136,143.70

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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.