Home / 289,614.12-434,479.20-100,081.44

Finding the Fourth Proportional to 289,614.12, 434,479.20 and 100,081.44

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Solution

The fourth proportional to 289,614.12, 434,479.20 and 100,081.44 is: 150,142.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,614.12 : 434,479.20 = 100,081.44 : x
  2. Step 2: Convert to fraction form
    289,614.12/434,479.20 = 100,081.44/x
  3. Step 3: Cross multiply
    289,614.12x = 434,479.20 × 100,081.44
  4. Step 4: Simplify right side
    289,614.12x = 43,483,303,986.05
  5. Step 5: Solve for x
    x = 43,483,303,986.05/289,614.12
  6. Step 6: Final answer
    x = 150,142.21

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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.