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Finding the Fourth Proportional to 490,765.97, 736,006.70 and 191,179.78

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Solution

The fourth proportional to 490,765.97, 736,006.70 and 191,179.78 is: 286,714.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,765.97 : 736,006.70 = 191,179.78 : x
  2. Step 2: Convert to fraction form
    490,765.97/736,006.70 = 191,179.78/x
  3. Step 3: Cross multiply
    490,765.97x = 736,006.70 × 191,179.78
  4. Step 4: Simplify right side
    490,765.97x = 140,709,597,622.46
  5. Step 5: Solve for x
    x = 140,709,597,622.46/490,765.97
  6. Step 6: Final answer
    x = 286,714.25

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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.