Home / 289,624.70-434,405-76,414.22

Finding the Fourth Proportional to 289,624.70, 434,405 and 76,414.22

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Solution

The fourth proportional to 289,624.70, 434,405 and 76,414.22 is: 114,612.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,624.70 : 434,405 = 76,414.22 : x
  2. Step 2: Convert to fraction form
    289,624.70/434,405 = 76,414.22/x
  3. Step 3: Cross multiply
    289,624.70x = 434,405 × 76,414.22
  4. Step 4: Simplify right side
    289,624.70x = 33,194,719,239.10
  5. Step 5: Solve for x
    x = 33,194,719,239.10/289,624.70
  6. Step 6: Final answer
    x = 114,612.87

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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.