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Finding the Fourth Proportional to 383,371.20, 575,086.56 and 130,573.76

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Solution

The fourth proportional to 383,371.20, 575,086.56 and 130,573.76 is: 195,870.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,371.20 : 575,086.56 = 130,573.76 : x
  2. Step 2: Convert to fraction form
    383,371.20/575,086.56 = 130,573.76/x
  3. Step 3: Cross multiply
    383,371.20x = 575,086.56 × 130,573.76
  4. Step 4: Simplify right side
    383,371.20x = 75,091,214,464.67
  5. Step 5: Solve for x
    x = 75,091,214,464.67/383,371.20
  6. Step 6: Final answer
    x = 195,870.78

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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.