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Finding the Fourth Proportional to 274,321.96, 378,549.05 and 153,439.89

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Solution

The fourth proportional to 274,321.96, 378,549.05 and 153,439.89 is: 211,738.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,321.96 : 378,549.05 = 153,439.89 : x
  2. Step 2: Convert to fraction form
    274,321.96/378,549.05 = 153,439.89/x
  3. Step 3: Cross multiply
    274,321.96x = 378,549.05 × 153,439.89
  4. Step 4: Simplify right side
    274,321.96x = 58,084,522,404.85
  5. Step 5: Solve for x
    x = 58,084,522,404.85/274,321.96
  6. Step 6: Final answer
    x = 211,738.51

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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.