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Finding the Fourth Proportional to 262,615.80, 393,890.85 and 73,090.38

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Solution

The fourth proportional to 262,615.80, 393,890.85 and 73,090.38 is: 109,626.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,615.80 : 393,890.85 = 73,090.38 : x
  2. Step 2: Convert to fraction form
    262,615.80/393,890.85 = 73,090.38/x
  3. Step 3: Cross multiply
    262,615.80x = 393,890.85 × 73,090.38
  4. Step 4: Simplify right side
    262,615.80x = 28,789,631,905.02
  5. Step 5: Solve for x
    x = 28,789,631,905.02/262,615.80
  6. Step 6: Final answer
    x = 109,626.43

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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.