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Finding the Fourth Proportional to 547,348.08, 755,333.20 and 305,634.78

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Solution

The fourth proportional to 547,348.08, 755,333.20 and 305,634.78 is: 421,772.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,348.08 : 755,333.20 = 305,634.78 : x
  2. Step 2: Convert to fraction form
    547,348.08/755,333.20 = 305,634.78/x
  3. Step 3: Cross multiply
    547,348.08x = 755,333.20 × 305,634.78
  4. Step 4: Simplify right side
    547,348.08x = 230,856,096,408.70
  5. Step 5: Solve for x
    x = 230,856,096,408.70/547,348.08
  6. Step 6: Final answer
    x = 421,772.00

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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.