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Finding the Fourth Proportional to 274,505.40, 378,799.86 and 153,626.28

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Solution

The fourth proportional to 274,505.40, 378,799.86 and 153,626.28 is: 211,994.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,505.40 : 378,799.86 = 153,626.28 : x
  2. Step 2: Convert to fraction form
    274,505.40/378,799.86 = 153,626.28/x
  3. Step 3: Cross multiply
    274,505.40x = 378,799.86 × 153,626.28
  4. Step 4: Simplify right side
    274,505.40x = 58,193,613,356.32
  5. Step 5: Solve for x
    x = 58,193,613,356.32/274,505.40
  6. Step 6: Final answer
    x = 211,994.42

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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.