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Finding the Fourth Proportional to 389,809.20, 584,260.20 and 179,468.40

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Solution

The fourth proportional to 389,809.20, 584,260.20 and 179,468.40 is: 268,993.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,809.20 : 584,260.20 = 179,468.40 : x
  2. Step 2: Convert to fraction form
    389,809.20/584,260.20 = 179,468.40/x
  3. Step 3: Cross multiply
    389,809.20x = 584,260.20 × 179,468.40
  4. Step 4: Simplify right side
    389,809.20x = 104,856,243,277.68
  5. Step 5: Solve for x
    x = 104,856,243,277.68/389,809.20
  6. Step 6: Final answer
    x = 268,993.76

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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.