Home / 260,211.31-390,233.36-82,676.83

Finding the Fourth Proportional to 260,211.31, 390,233.36 and 82,676.83

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Solution

The fourth proportional to 260,211.31, 390,233.36 and 82,676.83 is: 123,988.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,211.31 : 390,233.36 = 82,676.83 : x
  2. Step 2: Convert to fraction form
    260,211.31/390,233.36 = 82,676.83/x
  3. Step 3: Cross multiply
    260,211.31x = 390,233.36 × 82,676.83
  4. Step 4: Simplify right side
    260,211.31x = 32,263,257,165.05
  5. Step 5: Solve for x
    x = 32,263,257,165.05/260,211.31
  6. Step 6: Final answer
    x = 123,988.68

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1.5x scale

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.