Home / 378,190.40-567,285.60-311,835.20

Finding the Fourth Proportional to 378,190.40, 567,285.60 and 311,835.20

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Solution

The fourth proportional to 378,190.40, 567,285.60 and 311,835.20 is: 467,752.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,190.40 : 567,285.60 = 311,835.20 : x
  2. Step 2: Convert to fraction form
    378,190.40/567,285.60 = 311,835.20/x
  3. Step 3: Cross multiply
    378,190.40x = 567,285.60 × 311,835.20
  4. Step 4: Simplify right side
    378,190.40x = 176,899,618,533.12
  5. Step 5: Solve for x
    x = 176,899,618,533.12/378,190.40
  6. Step 6: Final answer
    x = 467,752.80

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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.