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Finding the Fourth Proportional to 547,101.30, 755,125.76 and 320,819.70

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Solution

The fourth proportional to 547,101.30, 755,125.76 and 320,819.70 is: 442,805.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,101.30 : 755,125.76 = 320,819.70 : x
  2. Step 2: Convert to fraction form
    547,101.30/755,125.76 = 320,819.70/x
  3. Step 3: Cross multiply
    547,101.30x = 755,125.76 × 320,819.70
  4. Step 4: Simplify right side
    547,101.30x = 242,259,219,785.47
  5. Step 5: Solve for x
    x = 242,259,219,785.47/547,101.30
  6. Step 6: Final answer
    x = 442,805.05

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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.