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Finding the Fourth Proportional to 397,299.78, 547,910.46 and 295,579.98

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Solution

The fourth proportional to 397,299.78, 547,910.46 and 295,579.98 is: 407,630.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,299.78 : 547,910.46 = 295,579.98 : x
  2. Step 2: Convert to fraction form
    397,299.78/547,910.46 = 295,579.98/x
  3. Step 3: Cross multiply
    397,299.78x = 547,910.46 × 295,579.98
  4. Step 4: Simplify right side
    397,299.78x = 161,951,362,808.59
  5. Step 5: Solve for x
    x = 161,951,362,808.59/397,299.78
  6. Step 6: Final answer
    x = 407,630.13

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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.