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Finding the Fourth Proportional to 143,392.38, 215,191.71 and 53,447.46

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Solution

The fourth proportional to 143,392.38, 215,191.71 and 53,447.46 is: 80,209.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,392.38 : 215,191.71 = 53,447.46 : x
  2. Step 2: Convert to fraction form
    143,392.38/215,191.71 = 53,447.46/x
  3. Step 3: Cross multiply
    143,392.38x = 215,191.71 × 53,447.46
  4. Step 4: Simplify right side
    143,392.38x = 11,501,450,312.56
  5. Step 5: Solve for x
    x = 11,501,450,312.56/143,392.38
  6. Step 6: Final answer
    x = 80,209.63

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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.