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Finding the Fourth Proportional to 250,317.30, 375,512.40 and 81,796.80

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Solution

The fourth proportional to 250,317.30, 375,512.40 and 81,796.80 is: 122,707.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,317.30 : 375,512.40 = 81,796.80 : x
  2. Step 2: Convert to fraction form
    250,317.30/375,512.40 = 81,796.80/x
  3. Step 3: Cross multiply
    250,317.30x = 375,512.40 × 81,796.80
  4. Step 4: Simplify right side
    250,317.30x = 30,715,712,680.32
  5. Step 5: Solve for x
    x = 30,715,712,680.32/250,317.30
  6. Step 6: Final answer
    x = 122,707.11

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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.