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Finding the Fourth Proportional to 539,317.88, 809,285.93 and 219,410.72

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Solution

The fourth proportional to 539,317.88, 809,285.93 and 219,410.72 is: 329,241.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,317.88 : 809,285.93 = 219,410.72 : x
  2. Step 2: Convert to fraction form
    539,317.88/809,285.93 = 219,410.72/x
  3. Step 3: Cross multiply
    539,317.88x = 809,285.93 × 219,410.72
  4. Step 4: Simplify right side
    539,317.88x = 177,566,003,443.69
  5. Step 5: Solve for x
    x = 177,566,003,443.69/539,317.88
  6. Step 6: Final answer
    x = 329,241.82

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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.