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Finding the Fourth Proportional to 143,273.70, 214,912.35 and 43,434.90

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Solution

The fourth proportional to 143,273.70, 214,912.35 and 43,434.90 is: 65,152.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,273.70 : 214,912.35 = 43,434.90 : x
  2. Step 2: Convert to fraction form
    143,273.70/214,912.35 = 43,434.90/x
  3. Step 3: Cross multiply
    143,273.70x = 214,912.35 × 43,434.90
  4. Step 4: Simplify right side
    143,273.70x = 9,334,696,431.02
  5. Step 5: Solve for x
    x = 9,334,696,431.02/143,273.70
  6. Step 6: Final answer
    x = 65,152.90

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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.