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Finding the Fourth Proportional to 214,658.64, 321,569.08 and 140,562

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Solution

The fourth proportional to 214,658.64, 321,569.08 and 140,562 is: 210,568.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,658.64 : 321,569.08 = 140,562 : x
  2. Step 2: Convert to fraction form
    214,658.64/321,569.08 = 140,562/x
  3. Step 3: Cross multiply
    214,658.64x = 321,569.08 × 140,562
  4. Step 4: Simplify right side
    214,658.64x = 45,200,393,022.96
  5. Step 5: Solve for x
    x = 45,200,393,022.96/214,658.64
  6. Step 6: Final answer
    x = 210,568.71

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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.