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Finding the Fourth Proportional to 378,260.30, 567,390.45 and 220,666.70

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Solution

The fourth proportional to 378,260.30, 567,390.45 and 220,666.70 is: 331,000.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,260.30 : 567,390.45 = 220,666.70 : x
  2. Step 2: Convert to fraction form
    378,260.30/567,390.45 = 220,666.70/x
  3. Step 3: Cross multiply
    378,260.30x = 567,390.45 × 220,666.70
  4. Step 4: Simplify right side
    378,260.30x = 125,204,178,213.02
  5. Step 5: Solve for x
    x = 125,204,178,213.02/378,260.30
  6. Step 6: Final answer
    x = 331,000.05

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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.