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Finding the Fourth Proportional to 250,406.41, 375,530.31 and 81,887.80

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Solution

The fourth proportional to 250,406.41, 375,530.31 and 81,887.80 is: 122,805.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,406.41 : 375,530.31 = 81,887.80 : x
  2. Step 2: Convert to fraction form
    250,406.41/375,530.31 = 81,887.80/x
  3. Step 3: Cross multiply
    250,406.41x = 375,530.31 × 81,887.80
  4. Step 4: Simplify right side
    250,406.41x = 30,751,350,919.22
  5. Step 5: Solve for x
    x = 30,751,350,919.22/250,406.41
  6. Step 6: Final answer
    x = 122,805.77

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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.