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Finding the Fourth Proportional to 295,378.72, 407,620.48 and 161,242.72

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Solution

The fourth proportional to 295,378.72, 407,620.48 and 161,242.72 is: 222,513.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    295,378.72 : 407,620.48 = 161,242.72 : x
  2. Step 2: Convert to fraction form
    295,378.72/407,620.48 = 161,242.72/x
  3. Step 3: Cross multiply
    295,378.72x = 407,620.48 × 161,242.72
  4. Step 4: Simplify right side
    295,378.72x = 65,725,834,922.91
  5. Step 5: Solve for x
    x = 65,725,834,922.91/295,378.72
  6. Step 6: Final answer
    x = 222,513.78

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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.