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Finding the Fourth Proportional to 484,862.45, 669,198.39 and 281,043.77

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Solution

The fourth proportional to 484,862.45, 669,198.39 and 281,043.77 is: 387,891.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,862.45 : 669,198.39 = 281,043.77 : x
  2. Step 2: Convert to fraction form
    484,862.45/669,198.39 = 281,043.77/x
  3. Step 3: Cross multiply
    484,862.45x = 669,198.39 × 281,043.77
  4. Step 4: Simplify right side
    484,862.45x = 188,074,038,403.53
  5. Step 5: Solve for x
    x = 188,074,038,403.53/484,862.45
  6. Step 6: Final answer
    x = 387,891.53

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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.