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Finding the Fourth Proportional to 379,505.62, 568,798.02 and 278,731.32

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Solution

The fourth proportional to 379,505.62, 568,798.02 and 278,731.32 is: 417,758.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,505.62 : 568,798.02 = 278,731.32 : x
  2. Step 2: Convert to fraction form
    379,505.62/568,798.02 = 278,731.32/x
  3. Step 3: Cross multiply
    379,505.62x = 568,798.02 × 278,731.32
  4. Step 4: Simplify right side
    379,505.62x = 158,541,822,927.99
  5. Step 5: Solve for x
    x = 158,541,822,927.99/379,505.62
  6. Step 6: Final answer
    x = 417,758.83

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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.