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Finding the Fourth Proportional to 517,274.91, 775,912.37 and 143,288.19

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Solution

The fourth proportional to 517,274.91, 775,912.37 and 143,288.19 is: 214,932.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,274.91 : 775,912.37 = 143,288.19 : x
  2. Step 2: Convert to fraction form
    517,274.91/775,912.37 = 143,288.19/x
  3. Step 3: Cross multiply
    517,274.91x = 775,912.37 × 143,288.19
  4. Step 4: Simplify right side
    517,274.91x = 111,179,078,379.47
  5. Step 5: Solve for x
    x = 111,179,078,379.47/517,274.91
  6. Step 6: Final answer
    x = 214,932.29

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.