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Finding the Fourth Proportional to 483,638.52, 667,368.12 and 279,658.65

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Solution

The fourth proportional to 483,638.52, 667,368.12 and 279,658.65 is: 385,898.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,638.52 : 667,368.12 = 279,658.65 : x
  2. Step 2: Convert to fraction form
    483,638.52/667,368.12 = 279,658.65/x
  3. Step 3: Cross multiply
    483,638.52x = 667,368.12 × 279,658.65
  4. Step 4: Simplify right side
    483,638.52x = 186,635,267,492.24
  5. Step 5: Solve for x
    x = 186,635,267,492.24/483,638.52
  6. Step 6: Final answer
    x = 385,898.27

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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.