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Finding the Fourth Proportional to 295,115.80, 442,731.30 and 126,635.80

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Solution

The fourth proportional to 295,115.80, 442,731.30 and 126,635.80 is: 189,978.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    295,115.80 : 442,731.30 = 126,635.80 : x
  2. Step 2: Convert to fraction form
    295,115.80/442,731.30 = 126,635.80/x
  3. Step 3: Cross multiply
    295,115.80x = 442,731.30 × 126,635.80
  4. Step 4: Simplify right side
    295,115.80x = 56,065,632,360.54
  5. Step 5: Solve for x
    x = 56,065,632,360.54/295,115.80
  6. Step 6: Final answer
    x = 189,978.42

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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.