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Finding the Fourth Proportional to 353,912.13, 488,505.47 and 240,800.49

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Solution

The fourth proportional to 353,912.13, 488,505.47 and 240,800.49 is: 332,377.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,912.13 : 488,505.47 = 240,800.49 : x
  2. Step 2: Convert to fraction form
    353,912.13/488,505.47 = 240,800.49/x
  3. Step 3: Cross multiply
    353,912.13x = 488,505.47 × 240,800.49
  4. Step 4: Simplify right side
    353,912.13x = 117,632,355,339.68
  5. Step 5: Solve for x
    x = 117,632,355,339.68/353,912.13
  6. Step 6: Final answer
    x = 332,377.29

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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.