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Finding the Fourth Proportional to 274,241.22, 378,453.72 and 153,384.54

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Solution

The fourth proportional to 274,241.22, 378,453.72 and 153,384.54 is: 211,671.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,241.22 : 378,453.72 = 153,384.54 : x
  2. Step 2: Convert to fraction form
    274,241.22/378,453.72 = 153,384.54/x
  3. Step 3: Cross multiply
    274,241.22x = 378,453.72 × 153,384.54
  4. Step 4: Simplify right side
    274,241.22x = 58,048,949,753.49
  5. Step 5: Solve for x
    x = 58,048,949,753.49/274,241.22
  6. Step 6: Final answer
    x = 211,671.13

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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.