Home / 379,129.42-568,289.50-189,215.80

Finding the Fourth Proportional to 379,129.42, 568,289.50 and 189,215.80

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Solution

The fourth proportional to 379,129.42, 568,289.50 and 189,215.80 is: 283,621.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,129.42 : 568,289.50 = 189,215.80 : x
  2. Step 2: Convert to fraction form
    379,129.42/568,289.50 = 189,215.80/x
  3. Step 3: Cross multiply
    379,129.42x = 568,289.50 × 189,215.80
  4. Step 4: Simplify right side
    379,129.42x = 107,529,352,374.10
  5. Step 5: Solve for x
    x = 107,529,352,374.10/379,129.42
  6. Step 6: Final answer
    x = 283,621.76

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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.