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Finding the Fourth Proportional to 275,945.39, 380,836.08 and 153,449.90

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Solution

The fourth proportional to 275,945.39, 380,836.08 and 153,449.90 is: 211,778.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,945.39 : 380,836.08 = 153,449.90 : x
  2. Step 2: Convert to fraction form
    275,945.39/380,836.08 = 153,449.90/x
  3. Step 3: Cross multiply
    275,945.39x = 380,836.08 × 153,449.90
  4. Step 4: Simplify right side
    275,945.39x = 58,439,256,488.21
  5. Step 5: Solve for x
    x = 58,439,256,488.21/275,945.39
  6. Step 6: Final answer
    x = 211,778.34

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1.5x scale

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.