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Finding the Fourth Proportional to 483,315.66, 667,062.96 and 279,338.43

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Solution

The fourth proportional to 483,315.66, 667,062.96 and 279,338.43 is: 385,537.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,315.66 : 667,062.96 = 279,338.43 : x
  2. Step 2: Convert to fraction form
    483,315.66/667,062.96 = 279,338.43/x
  3. Step 3: Cross multiply
    483,315.66x = 667,062.96 × 279,338.43
  4. Step 4: Simplify right side
    483,315.66x = 186,336,319,957.55
  5. Step 5: Solve for x
    x = 186,336,319,957.55/483,315.66
  6. Step 6: Final answer
    x = 385,537.52

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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.