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Finding the Fourth Proportional to 274,073.01, 378,223.44 and 153,220.90

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Solution

The fourth proportional to 274,073.01, 378,223.44 and 153,220.90 is: 211,446.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,073.01 : 378,223.44 = 153,220.90 : x
  2. Step 2: Convert to fraction form
    274,073.01/378,223.44 = 153,220.90/x
  3. Step 3: Cross multiply
    274,073.01x = 378,223.44 × 153,220.90
  4. Step 4: Simplify right side
    274,073.01x = 57,951,735,877.90
  5. Step 5: Solve for x
    x = 57,951,735,877.90/274,073.01
  6. Step 6: Final answer
    x = 211,446.34

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1.5x scale

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.