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Finding the Fourth Proportional to 340,781.97, 511,264.99 and 104,118.20

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Solution

The fourth proportional to 340,781.97, 511,264.99 and 104,118.20 is: 156,205.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,781.97 : 511,264.99 = 104,118.20 : x
  2. Step 2: Convert to fraction form
    340,781.97/511,264.99 = 104,118.20/x
  3. Step 3: Cross multiply
    340,781.97x = 511,264.99 × 104,118.20
  4. Step 4: Simplify right side
    340,781.97x = 53,231,987,925.49
  5. Step 5: Solve for x
    x = 53,231,987,925.49/340,781.97
  6. Step 6: Final answer
    x = 156,205.41

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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.