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Finding the Fourth Proportional to 274,504.59, 378,812.60 and 153,645.84

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Solution

The fourth proportional to 274,504.59, 378,812.60 and 153,645.84 is: 212,029.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,504.59 : 378,812.60 = 153,645.84 : x
  2. Step 2: Convert to fraction form
    274,504.59/378,812.60 = 153,645.84/x
  3. Step 3: Cross multiply
    274,504.59x = 378,812.60 × 153,645.84
  4. Step 4: Simplify right side
    274,504.59x = 58,202,980,129.58
  5. Step 5: Solve for x
    x = 58,202,980,129.58/274,504.59
  6. Step 6: Final answer
    x = 212,029.17

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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.