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Finding the Fourth Proportional to 543,355.31, 814,994.49 and 143,987.24

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Solution

The fourth proportional to 543,355.31, 814,994.49 and 143,987.24 is: 215,970.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,355.31 : 814,994.49 = 143,987.24 : x
  2. Step 2: Convert to fraction form
    543,355.31/814,994.49 = 143,987.24/x
  3. Step 3: Cross multiply
    543,355.31x = 814,994.49 × 143,987.24
  4. Step 4: Simplify right side
    543,355.31x = 117,348,807,230.31
  5. Step 5: Solve for x
    x = 117,348,807,230.31/543,355.31
  6. Step 6: Final answer
    x = 215,970.66

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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.