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Finding the Fourth Proportional to 214,390.56, 321,611.22 and 56,620.38

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Solution

The fourth proportional to 214,390.56, 321,611.22 and 56,620.38 is: 84,937.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,390.56 : 321,611.22 = 56,620.38 : x
  2. Step 2: Convert to fraction form
    214,390.56/321,611.22 = 56,620.38/x
  3. Step 3: Cross multiply
    214,390.56x = 321,611.22 × 56,620.38
  4. Step 4: Simplify right side
    214,390.56x = 18,209,749,488.66
  5. Step 5: Solve for x
    x = 18,209,749,488.66/214,390.56
  6. Step 6: Final answer
    x = 84,937.27

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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.