Home / 389,739.20-584,414.40-179,139.20

Finding the Fourth Proportional to 389,739.20, 584,414.40 and 179,139.20

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Solution

The fourth proportional to 389,739.20, 584,414.40 and 179,139.20 is: 268,619.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,739.20 : 584,414.40 = 179,139.20 : x
  2. Step 2: Convert to fraction form
    389,739.20/584,414.40 = 179,139.20/x
  3. Step 3: Cross multiply
    389,739.20x = 584,414.40 × 179,139.20
  4. Step 4: Simplify right side
    389,739.20x = 104,691,528,084.48
  5. Step 5: Solve for x
    x = 104,691,528,084.48/389,739.20
  6. Step 6: Final answer
    x = 268,619.45

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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.