Home / 378,004.20-567,006.30-311,519.40

Finding the Fourth Proportional to 378,004.20, 567,006.30 and 311,519.40

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Solution

The fourth proportional to 378,004.20, 567,006.30 and 311,519.40 is: 467,279.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,004.20 : 567,006.30 = 311,519.40 : x
  2. Step 2: Convert to fraction form
    378,004.20/567,006.30 = 311,519.40/x
  3. Step 3: Cross multiply
    378,004.20x = 567,006.30 × 311,519.40
  4. Step 4: Simplify right side
    378,004.20x = 176,633,462,372.22
  5. Step 5: Solve for x
    x = 176,633,462,372.22/378,004.20
  6. Step 6: Final answer
    x = 467,279.10

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1.5x scale

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.