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Finding the Fourth Proportional to 250,515.30, 375,809.40 and 81,994.80

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Solution

The fourth proportional to 250,515.30, 375,809.40 and 81,994.80 is: 123,004.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,515.30 : 375,809.40 = 81,994.80 : x
  2. Step 2: Convert to fraction form
    250,515.30/375,809.40 = 81,994.80/x
  3. Step 3: Cross multiply
    250,515.30x = 375,809.40 × 81,994.80
  4. Step 4: Simplify right side
    250,515.30x = 30,814,416,591.12
  5. Step 5: Solve for x
    x = 30,814,416,591.12/250,515.30
  6. Step 6: Final answer
    x = 123,004.13

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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.