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Finding the Fourth Proportional to 482,949.87, 666,540.12 and 289,365.22

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Solution

The fourth proportional to 482,949.87, 666,540.12 and 289,365.22 is: 399,365.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,949.87 : 666,540.12 = 289,365.22 : x
  2. Step 2: Convert to fraction form
    482,949.87/666,540.12 = 289,365.22/x
  3. Step 3: Cross multiply
    482,949.87x = 666,540.12 × 289,365.22
  4. Step 4: Simplify right side
    482,949.87x = 192,873,528,462.63
  5. Step 5: Solve for x
    x = 192,873,528,462.63/482,949.87
  6. Step 6: Final answer
    x = 399,365.53

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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.