Home / 378,857.18-522,890.70-225,905.24

Finding the Fourth Proportional to 378,857.18, 522,890.70 and 225,905.24

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Solution

The fourth proportional to 378,857.18, 522,890.70 and 225,905.24 is: 311,789.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,857.18 : 522,890.70 = 225,905.24 : x
  2. Step 2: Convert to fraction form
    378,857.18/522,890.70 = 225,905.24/x
  3. Step 3: Cross multiply
    378,857.18x = 522,890.70 × 225,905.24
  4. Step 4: Simplify right side
    378,857.18x = 118,123,749,077.27
  5. Step 5: Solve for x
    x = 118,123,749,077.27/378,857.18
  6. Step 6: Final answer
    x = 311,789.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.