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Finding the Fourth Proportional to 262,857.40, 394,242.90 and 73,330.72

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Solution

The fourth proportional to 262,857.40, 394,242.90 and 73,330.72 is: 109,984.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,857.40 : 394,242.90 = 73,330.72 : x
  2. Step 2: Convert to fraction form
    262,857.40/394,242.90 = 73,330.72/x
  3. Step 3: Cross multiply
    262,857.40x = 394,242.90 × 73,330.72
  4. Step 4: Simplify right side
    262,857.40x = 28,910,115,711.89
  5. Step 5: Solve for x
    x = 28,910,115,711.89/262,857.40
  6. Step 6: Final answer
    x = 109,984.03

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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.