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Finding the Fourth Proportional to 274,506.40, 378,801.24 and 153,627.28

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Solution

The fourth proportional to 274,506.40, 378,801.24 and 153,627.28 is: 211,995.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,506.40 : 378,801.24 = 153,627.28 : x
  2. Step 2: Convert to fraction form
    274,506.40/378,801.24 = 153,627.28/x
  3. Step 3: Cross multiply
    274,506.40x = 378,801.24 × 153,627.28
  4. Step 4: Simplify right side
    274,506.40x = 58,194,204,161.83
  5. Step 5: Solve for x
    x = 58,194,204,161.83/274,506.40
  6. Step 6: Final answer
    x = 211,995.80

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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.