Home / 260,021.20-390,069.60-110,261.20

Finding the Fourth Proportional to 260,021.20, 390,069.60 and 110,261.20

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Solution

The fourth proportional to 260,021.20, 390,069.60 and 110,261.20 is: 165,407.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,021.20 : 390,069.60 = 110,261.20 : x
  2. Step 2: Convert to fraction form
    260,021.20/390,069.60 = 110,261.20/x
  3. Step 3: Cross multiply
    260,021.20x = 390,069.60 × 110,261.20
  4. Step 4: Simplify right side
    260,021.20x = 43,009,542,179.52
  5. Step 5: Solve for x
    x = 43,009,542,179.52/260,021.20
  6. Step 6: Final answer
    x = 165,407.83

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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.