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Finding the Fourth Proportional to 389,793.88, 584,746.21 and 119,944.40

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Solution

The fourth proportional to 389,793.88, 584,746.21 and 119,944.40 is: 179,933.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,793.88 : 584,746.21 = 119,944.40 : x
  2. Step 2: Convert to fraction form
    389,793.88/584,746.21 = 119,944.40/x
  3. Step 3: Cross multiply
    389,793.88x = 584,746.21 × 119,944.40
  4. Step 4: Simplify right side
    389,793.88x = 70,137,033,310.72
  5. Step 5: Solve for x
    x = 70,137,033,310.72/389,793.88
  6. Step 6: Final answer
    x = 179,933.64

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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.