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Finding the Fourth Proportional to 210,791.88, 316,164.52 and 53,020.39

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Solution

The fourth proportional to 210,791.88, 316,164.52 and 53,020.39 is: 79,524.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,791.88 : 316,164.52 = 53,020.39 : x
  2. Step 2: Convert to fraction form
    210,791.88/316,164.52 = 53,020.39/x
  3. Step 3: Cross multiply
    210,791.88x = 316,164.52 × 53,020.39
  4. Step 4: Simplify right side
    210,791.88x = 16,763,166,154.56
  5. Step 5: Solve for x
    x = 16,763,166,154.56/210,791.88
  6. Step 6: Final answer
    x = 79,524.72

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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.