Home / 389,519.20-584,235.60-109,064.80

Finding the Fourth Proportional to 389,519.20, 584,235.60 and 109,064.80

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Solution

The fourth proportional to 389,519.20, 584,235.60 and 109,064.80 is: 163,585.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,519.20 : 584,235.60 = 109,064.80 : x
  2. Step 2: Convert to fraction form
    389,519.20/584,235.60 = 109,064.80/x
  3. Step 3: Cross multiply
    389,519.20x = 584,235.60 × 109,064.80
  4. Step 4: Simplify right side
    389,519.20x = 63,719,538,866.88
  5. Step 5: Solve for x
    x = 63,719,538,866.88/389,519.20
  6. Step 6: Final answer
    x = 163,585.10

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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.