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Finding the Fourth Proportional to 274,352.57, 378,621.24 and 153,486.64

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Solution

The fourth proportional to 274,352.57, 378,621.24 and 153,486.64 is: 211,819.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,352.57 : 378,621.24 = 153,486.64 : x
  2. Step 2: Convert to fraction form
    274,352.57/378,621.24 = 153,486.64/x
  3. Step 3: Cross multiply
    274,352.57x = 378,621.24 × 153,486.64
  4. Step 4: Simplify right side
    274,352.57x = 58,113,303,009.09
  5. Step 5: Solve for x
    x = 58,113,303,009.09/274,352.57
  6. Step 6: Final answer
    x = 211,819.79

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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.