Home / 389,815.20-584,722.80-179,863.20

Finding the Fourth Proportional to 389,815.20, 584,722.80 and 179,863.20

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Solution

The fourth proportional to 389,815.20, 584,722.80 and 179,863.20 is: 269,794.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,815.20 : 584,722.80 = 179,863.20 : x
  2. Step 2: Convert to fraction form
    389,815.20/584,722.80 = 179,863.20/x
  3. Step 3: Cross multiply
    389,815.20x = 584,722.80 × 179,863.20
  4. Step 4: Simplify right side
    389,815.20x = 105,170,113,920.96
  5. Step 5: Solve for x
    x = 105,170,113,920.96/389,815.20
  6. Step 6: Final answer
    x = 269,794.80

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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.