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Finding the Fourth Proportional to 519,546.30, 778,887.45 and 220,256.70

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Solution

The fourth proportional to 519,546.30, 778,887.45 and 220,256.70 is: 330,201.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,546.30 : 778,887.45 = 220,256.70 : x
  2. Step 2: Convert to fraction form
    519,546.30/778,887.45 = 220,256.70/x
  3. Step 3: Cross multiply
    519,546.30x = 778,887.45 × 220,256.70
  4. Step 4: Simplify right side
    519,546.30x = 171,555,179,408.42
  5. Step 5: Solve for x
    x = 171,555,179,408.42/519,546.30
  6. Step 6: Final answer
    x = 330,201.91

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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.