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Finding the Fourth Proportional to 483,815.99, 667,591.33 and 279,885.88

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Solution

The fourth proportional to 483,815.99, 667,591.33 and 279,885.88 is: 386,199.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,815.99 : 667,591.33 = 279,885.88 : x
  2. Step 2: Convert to fraction form
    483,815.99/667,591.33 = 279,885.88/x
  3. Step 3: Cross multiply
    483,815.99x = 667,591.33 × 279,885.88
  4. Step 4: Simplify right side
    483,815.99x = 186,849,386,877.42
  5. Step 5: Solve for x
    x = 186,849,386,877.42/483,815.99
  6. Step 6: Final answer
    x = 386,199.28

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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.