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Finding the Fourth Proportional to 356,287.59, 491,659.34 and 195,143.36

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Solution

The fourth proportional to 356,287.59, 491,659.34 and 195,143.36 is: 269,288.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,287.59 : 491,659.34 = 195,143.36 : x
  2. Step 2: Convert to fraction form
    356,287.59/491,659.34 = 195,143.36/x
  3. Step 3: Cross multiply
    356,287.59x = 491,659.34 × 195,143.36
  4. Step 4: Simplify right side
    356,287.59x = 95,944,052,148.97
  5. Step 5: Solve for x
    x = 95,944,052,148.97/356,287.59
  6. Step 6: Final answer
    x = 269,288.22

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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.