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Finding the Fourth Proportional to 218,685.34, 301,791.99 and 210,753.82

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Solution

The fourth proportional to 218,685.34, 301,791.99 and 210,753.82 is: 290,846.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,685.34 : 301,791.99 = 210,753.82 : x
  2. Step 2: Convert to fraction form
    218,685.34/301,791.99 = 210,753.82/x
  3. Step 3: Cross multiply
    218,685.34x = 301,791.99 × 210,753.82
  4. Step 4: Simplify right side
    218,685.34x = 63,603,814,737.90
  5. Step 5: Solve for x
    x = 63,603,814,737.90/218,685.34
  6. Step 6: Final answer
    x = 290,846.27

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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.