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Finding the Fourth Proportional to 539,752.53, 809,908.98 and 220,138.87

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Solution

The fourth proportional to 539,752.53, 809,908.98 and 220,138.87 is: 330,322.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,752.53 : 809,908.98 = 220,138.87 : x
  2. Step 2: Convert to fraction form
    539,752.53/809,908.98 = 220,138.87/x
  3. Step 3: Cross multiply
    539,752.53x = 809,908.98 × 220,138.87
  4. Step 4: Simplify right side
    539,752.53x = 178,292,447,660.05
  5. Step 5: Solve for x
    x = 178,292,447,660.05/539,752.53
  6. Step 6: Final answer
    x = 330,322.58

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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.