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Finding the Fourth Proportional to 537,843.20, 806,764.80 and 143,859.20

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Solution

The fourth proportional to 537,843.20, 806,764.80 and 143,859.20 is: 215,788.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    537,843.20 : 806,764.80 = 143,859.20 : x
  2. Step 2: Convert to fraction form
    537,843.20/806,764.80 = 143,859.20/x
  3. Step 3: Cross multiply
    537,843.20x = 806,764.80 × 143,859.20
  4. Step 4: Simplify right side
    537,843.20x = 116,060,538,716.16
  5. Step 5: Solve for x
    x = 116,060,538,716.16/537,843.20
  6. Step 6: Final answer
    x = 215,788.80

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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.