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Finding the Fourth Proportional to 484,940.34, 669,158.82 and 278,198.01

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Solution

The fourth proportional to 484,940.34, 669,158.82 and 278,198.01 is: 383,879.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,940.34 : 669,158.82 = 278,198.01 : x
  2. Step 2: Convert to fraction form
    484,940.34/669,158.82 = 278,198.01/x
  3. Step 3: Cross multiply
    484,940.34x = 669,158.82 × 278,198.01
  4. Step 4: Simplify right side
    484,940.34x = 186,158,652,097.95
  5. Step 5: Solve for x
    x = 186,158,652,097.95/484,940.34
  6. Step 6: Final answer
    x = 383,879.49

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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.