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Finding the Fourth Proportional to 272,990.25, 409,485.38 and 75,998.25

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Solution

The fourth proportional to 272,990.25, 409,485.38 and 75,998.25 is: 113,997.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,990.25 : 409,485.38 = 75,998.25 : x
  2. Step 2: Convert to fraction form
    272,990.25/409,485.38 = 75,998.25/x
  3. Step 3: Cross multiply
    272,990.25x = 409,485.38 × 75,998.25
  4. Step 4: Simplify right side
    272,990.25x = 31,120,171,900.59
  5. Step 5: Solve for x
    x = 31,120,171,900.59/272,990.25
  6. Step 6: Final answer
    x = 113,997.38

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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.