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Finding the Fourth Proportional to 211,250.76, 315,238.26 and 188,817

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Solution

The fourth proportional to 211,250.76, 315,238.26 and 188,817 is: 281,761.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,250.76 : 315,238.26 = 188,817 : x
  2. Step 2: Convert to fraction form
    211,250.76/315,238.26 = 188,817/x
  3. Step 3: Cross multiply
    211,250.76x = 315,238.26 × 188,817
  4. Step 4: Simplify right side
    211,250.76x = 59,522,342,538.42
  5. Step 5: Solve for x
    x = 59,522,342,538.42/211,250.76
  6. Step 6: Final answer
    x = 281,761.55

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.