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Finding the Fourth Proportional to 444,782, 613,801.32 and 243,578

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Solution

The fourth proportional to 444,782, 613,801.32 and 243,578 is: 336,138.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    444,782 : 613,801.32 = 243,578 : x
  2. Step 2: Convert to fraction form
    444,782/613,801.32 = 243,578/x
  3. Step 3: Cross multiply
    444,782x = 613,801.32 × 243,578
  4. Step 4: Simplify right side
    444,782x = 149,508,497,922.96
  5. Step 5: Solve for x
    x = 149,508,497,922.96/444,782
  6. Step 6: Final answer
    x = 336,138.82

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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.