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Finding the Fourth Proportional to 274,357.82, 378,628.47 and 153,491.91

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Solution

The fourth proportional to 274,357.82, 378,628.47 and 153,491.91 is: 211,827.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,357.82 : 378,628.47 = 153,491.91 : x
  2. Step 2: Convert to fraction form
    274,357.82/378,628.47 = 153,491.91/x
  3. Step 3: Cross multiply
    274,357.82x = 378,628.47 × 153,491.91
  4. Step 4: Simplify right side
    274,357.82x = 58,116,407,040.68
  5. Step 5: Solve for x
    x = 58,116,407,040.68/274,357.82
  6. Step 6: Final answer
    x = 211,827.05

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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.