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Finding the Fourth Proportional to 483,419.89, 667,136.87 and 279,534.79

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Solution

The fourth proportional to 483,419.89, 667,136.87 and 279,534.79 is: 385,768.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,419.89 : 667,136.87 = 279,534.79 : x
  2. Step 2: Convert to fraction form
    483,419.89/667,136.87 = 279,534.79/x
  3. Step 3: Cross multiply
    483,419.89x = 667,136.87 × 279,534.79
  4. Step 4: Simplify right side
    483,419.89x = 186,487,964,856.71
  5. Step 5: Solve for x
    x = 186,487,964,856.71/483,419.89
  6. Step 6: Final answer
    x = 385,768.08

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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.