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Finding the Fourth Proportional to 259,655.00, 389,652.78 and 91,170.98

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Solution

The fourth proportional to 259,655.00, 389,652.78 and 91,170.98 is: 136,816.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,655.00 : 389,652.78 = 91,170.98 : x
  2. Step 2: Convert to fraction form
    259,655.00/389,652.78 = 91,170.98/x
  3. Step 3: Cross multiply
    259,655.00x = 389,652.78 × 91,170.98
  4. Step 4: Simplify right side
    259,655.00x = 35,525,023,864.06
  5. Step 5: Solve for x
    x = 35,525,023,864.06/259,655.00
  6. Step 6: Final answer
    x = 136,816.25

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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.