Home / 260,040.26-390,108.63-82,499.30

Finding the Fourth Proportional to 260,040.26, 390,108.63 and 82,499.30

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Solution

The fourth proportional to 260,040.26, 390,108.63 and 82,499.30 is: 123,764.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,040.26 : 390,108.63 = 82,499.30 : x
  2. Step 2: Convert to fraction form
    260,040.26/390,108.63 = 82,499.30/x
  3. Step 3: Cross multiply
    260,040.26x = 390,108.63 × 82,499.30
  4. Step 4: Simplify right side
    260,040.26x = 32,183,688,898.96
  5. Step 5: Solve for x
    x = 32,183,688,898.96/260,040.26
  6. Step 6: Final answer
    x = 123,764.25

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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.