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Finding the Fourth Proportional to 275,940.20, 412,926.15 and 191,303.30

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Solution

The fourth proportional to 275,940.20, 412,926.15 and 191,303.30 is: 286,272.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,940.20 : 412,926.15 = 191,303.30 : x
  2. Step 2: Convert to fraction form
    275,940.20/412,926.15 = 191,303.30/x
  3. Step 3: Cross multiply
    275,940.20x = 412,926.15 × 191,303.30
  4. Step 4: Simplify right side
    275,940.20x = 78,994,135,151.30
  5. Step 5: Solve for x
    x = 78,994,135,151.30/275,940.20
  6. Step 6: Final answer
    x = 286,272.66

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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.