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Finding the Fourth Proportional to 483,316.66, 667,064.34 and 279,339.43

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Solution

The fourth proportional to 483,316.66, 667,064.34 and 279,339.43 is: 385,538.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,316.66 : 667,064.34 = 279,339.43 : x
  2. Step 2: Convert to fraction form
    483,316.66/667,064.34 = 279,339.43/x
  3. Step 3: Cross multiply
    483,316.66x = 667,064.34 × 279,339.43
  4. Step 4: Simplify right side
    483,316.66x = 186,337,372,508.93
  5. Step 5: Solve for x
    x = 186,337,372,508.93/483,316.66
  6. Step 6: Final answer
    x = 385,538.90

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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.