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Finding the Fourth Proportional to 373,422.51, 515,369.43 and 228,198.42

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Solution

The fourth proportional to 373,422.51, 515,369.43 and 228,198.42 is: 314,942.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,422.51 : 515,369.43 = 228,198.42 : x
  2. Step 2: Convert to fraction form
    373,422.51/515,369.43 = 228,198.42/x
  3. Step 3: Cross multiply
    373,422.51x = 515,369.43 × 228,198.42
  4. Step 4: Simplify right side
    373,422.51x = 117,606,489,642.30
  5. Step 5: Solve for x
    x = 117,606,489,642.30/373,422.51
  6. Step 6: Final answer
    x = 314,942.15

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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.