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Finding the Fourth Proportional to 396,806.51, 547,529.00 and 243,795.48

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Solution

The fourth proportional to 396,806.51, 547,529.00 and 243,795.48 is: 336,398.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,806.51 : 547,529.00 = 243,795.48 : x
  2. Step 2: Convert to fraction form
    396,806.51/547,529.00 = 243,795.48/x
  3. Step 3: Cross multiply
    396,806.51x = 547,529.00 × 243,795.48
  4. Step 4: Simplify right side
    396,806.51x = 133,485,094,149.94
  5. Step 5: Solve for x
    x = 133,485,094,149.94/396,806.51
  6. Step 6: Final answer
    x = 336,398.45

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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.