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Finding the Fourth Proportional to 547,101.12, 755,125.50 and 320,819.52

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Solution

The fourth proportional to 547,101.12, 755,125.50 and 320,819.52 is: 442,804.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,101.12 : 755,125.50 = 320,819.52 : x
  2. Step 2: Convert to fraction form
    547,101.12/755,125.50 = 320,819.52/x
  3. Step 3: Cross multiply
    547,101.12x = 755,125.50 × 320,819.52
  4. Step 4: Simplify right side
    547,101.12x = 242,259,000,449.76
  5. Step 5: Solve for x
    x = 242,259,000,449.76/547,101.12
  6. Step 6: Final answer
    x = 442,804.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.