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Finding the Fourth Proportional to 143,222.67, 214,835.22 and 43,390.71

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Solution

The fourth proportional to 143,222.67, 214,835.22 and 43,390.71 is: 65,086.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,222.67 : 214,835.22 = 43,390.71 : x
  2. Step 2: Convert to fraction form
    143,222.67/214,835.22 = 43,390.71/x
  3. Step 3: Cross multiply
    143,222.67x = 214,835.22 × 43,390.71
  4. Step 4: Simplify right side
    143,222.67x = 9,321,852,728.81
  5. Step 5: Solve for x
    x = 9,321,852,728.81/143,222.67
  6. Step 6: Final answer
    x = 65,086.43

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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.