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Finding the Fourth Proportional to 274,308.56, 378,513.48 and 153,456.08

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Solution

The fourth proportional to 274,308.56, 378,513.48 and 153,456.08 is: 211,751.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,308.56 : 378,513.48 = 153,456.08 : x
  2. Step 2: Convert to fraction form
    274,308.56/378,513.48 = 153,456.08/x
  3. Step 3: Cross multiply
    274,308.56x = 378,513.48 × 153,456.08
  4. Step 4: Simplify right side
    274,308.56x = 58,085,194,867.96
  5. Step 5: Solve for x
    x = 58,085,194,867.96/274,308.56
  6. Step 6: Final answer
    x = 211,751.30

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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.