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Finding the Fourth Proportional to 347,906.72, 479,642.64 and 226,808.48

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Solution

The fourth proportional to 347,906.72, 479,642.64 and 226,808.48 is: 312,690.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,906.72 : 479,642.64 = 226,808.48 : x
  2. Step 2: Convert to fraction form
    347,906.72/479,642.64 = 226,808.48/x
  3. Step 3: Cross multiply
    347,906.72x = 479,642.64 × 226,808.48
  4. Step 4: Simplify right side
    347,906.72x = 108,787,018,121.59
  5. Step 5: Solve for x
    x = 108,787,018,121.59/347,906.72
  6. Step 6: Final answer
    x = 312,690.19

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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.