Home / 260,186.10-390,315.60-110,425.20

Finding the Fourth Proportional to 260,186.10, 390,315.60 and 110,425.20

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Solution

The fourth proportional to 260,186.10, 390,315.60 and 110,425.20 is: 165,653.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,186.10 : 390,315.60 = 110,425.20 : x
  2. Step 2: Convert to fraction form
    260,186.10/390,315.60 = 110,425.20/x
  3. Step 3: Cross multiply
    260,186.10x = 390,315.60 × 110,425.20
  4. Step 4: Simplify right side
    260,186.10x = 43,100,678,193.12
  5. Step 5: Solve for x
    x = 43,100,678,193.12/260,186.10
  6. Step 6: Final answer
    x = 165,653.27

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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.