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Finding the Fourth Proportional to 483,617.09, 667,338.59 and 279,637.14

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Solution

The fourth proportional to 483,617.09, 667,338.59 and 279,637.14 is: 385,868.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,617.09 : 667,338.59 = 279,637.14 : x
  2. Step 2: Convert to fraction form
    483,617.09/667,338.59 = 279,637.14/x
  3. Step 3: Cross multiply
    483,617.09x = 667,338.59 × 279,637.14
  4. Step 4: Simplify right side
    483,617.09x = 186,612,657,920.85
  5. Step 5: Solve for x
    x = 186,612,657,920.85/483,617.09
  6. Step 6: Final answer
    x = 385,868.62

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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.