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Finding the Fourth Proportional to 274,286.28, 378,550.08 and 153,434.28

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Solution

The fourth proportional to 274,286.28, 378,550.08 and 153,434.28 is: 211,758.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,286.28 : 378,550.08 = 153,434.28 : x
  2. Step 2: Convert to fraction form
    274,286.28/378,550.08 = 153,434.28/x
  3. Step 3: Cross multiply
    274,286.28x = 378,550.08 × 153,434.28
  4. Step 4: Simplify right side
    274,286.28x = 58,082,558,968.74
  5. Step 5: Solve for x
    x = 58,082,558,968.74/274,286.28
  6. Step 6: Final answer
    x = 211,758.89

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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.