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Finding the Fourth Proportional to 251,667, 347,301.54 and 138,491.64

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Solution

The fourth proportional to 251,667, 347,301.54 and 138,491.64 is: 191,119.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,667 : 347,301.54 = 138,491.64 : x
  2. Step 2: Convert to fraction form
    251,667/347,301.54 = 138,491.64/x
  3. Step 3: Cross multiply
    251,667x = 347,301.54 × 138,491.64
  4. Step 4: Simplify right side
    251,667x = 48,098,359,849.13
  5. Step 5: Solve for x
    x = 48,098,359,849.13/251,667
  6. Step 6: Final answer
    x = 191,119.06

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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.