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Finding the Fourth Proportional to 383,791.62, 575,690.40 and 147,077.76

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Solution

The fourth proportional to 383,791.62, 575,690.40 and 147,077.76 is: 220,617.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,791.62 : 575,690.40 = 147,077.76 : x
  2. Step 2: Convert to fraction form
    383,791.62/575,690.40 = 147,077.76/x
  3. Step 3: Cross multiply
    383,791.62x = 575,690.40 × 147,077.76
  4. Step 4: Simplify right side
    383,791.62x = 84,671,254,485.50
  5. Step 5: Solve for x
    x = 84,671,254,485.50/383,791.62
  6. Step 6: Final answer
    x = 220,617.78

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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.