Home / 260,578.78-390,922.94-89,816.06

Finding the Fourth Proportional to 260,578.78, 390,922.94 and 89,816.06

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Solution

The fourth proportional to 260,578.78, 390,922.94 and 89,816.06 is: 134,742.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,578.78 : 390,922.94 = 89,816.06 : x
  2. Step 2: Convert to fraction form
    260,578.78/390,922.94 = 89,816.06/x
  3. Step 3: Cross multiply
    260,578.78x = 390,922.94 × 89,816.06
  4. Step 4: Simplify right side
    260,578.78x = 35,111,158,234.42
  5. Step 5: Solve for x
    x = 35,111,158,234.42/260,578.78
  6. Step 6: Final answer
    x = 134,742.97

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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.