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Finding the Fourth Proportional to 383,739.20, 575,484.25 and 127,502.96

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Solution

The fourth proportional to 383,739.20, 575,484.25 and 127,502.96 is: 191,213.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,739.20 : 575,484.25 = 127,502.96 : x
  2. Step 2: Convert to fraction form
    383,739.20/575,484.25 = 127,502.96/x
  3. Step 3: Cross multiply
    383,739.20x = 575,484.25 × 127,502.96
  4. Step 4: Simplify right side
    383,739.20x = 73,375,941,793.44
  5. Step 5: Solve for x
    x = 73,375,941,793.44/383,739.20
  6. Step 6: Final answer
    x = 191,213.05

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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.