Home / 260,190.10-390,321.60-110,429.20

Finding the Fourth Proportional to 260,190.10, 390,321.60 and 110,429.20

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Solution

The fourth proportional to 260,190.10, 390,321.60 and 110,429.20 is: 165,659.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,190.10 : 390,321.60 = 110,429.20 : x
  2. Step 2: Convert to fraction form
    260,190.10/390,321.60 = 110,429.20/x
  3. Step 3: Cross multiply
    260,190.10x = 390,321.60 × 110,429.20
  4. Step 4: Simplify right side
    260,190.10x = 43,102,902,030.72
  5. Step 5: Solve for x
    x = 43,102,902,030.72/260,190.10
  6. Step 6: Final answer
    x = 165,659.27

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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.