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Finding the Fourth Proportional to 539,218.40, 809,410.80 and 303,022.40

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Solution

The fourth proportional to 539,218.40, 809,410.80 and 303,022.40 is: 454,861.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,218.40 : 809,410.80 = 303,022.40 : x
  2. Step 2: Convert to fraction form
    539,218.40/809,410.80 = 303,022.40/x
  3. Step 3: Cross multiply
    539,218.40x = 809,410.80 × 303,022.40
  4. Step 4: Simplify right side
    539,218.40x = 245,269,603,201.92
  5. Step 5: Solve for x
    x = 245,269,603,201.92/539,218.40
  6. Step 6: Final answer
    x = 454,861.34

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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.