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Finding the Fourth Proportional to 355,474.56, 490,236.96 and 294,949.28

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Solution

The fourth proportional to 355,474.56, 490,236.96 and 294,949.28 is: 406,766.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,474.56 : 490,236.96 = 294,949.28 : x
  2. Step 2: Convert to fraction form
    355,474.56/490,236.96 = 294,949.28/x
  3. Step 3: Cross multiply
    355,474.56x = 490,236.96 × 294,949.28
  4. Step 4: Simplify right side
    355,474.56x = 144,595,038,381.39
  5. Step 5: Solve for x
    x = 144,595,038,381.39/355,474.56
  6. Step 6: Final answer
    x = 406,766.21

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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.