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Finding the Fourth Proportional to 262,361.30, 393,502.74 and 72,801.71

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Solution

The fourth proportional to 262,361.30, 393,502.74 and 72,801.71 is: 109,191.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,361.30 : 393,502.74 = 72,801.71 : x
  2. Step 2: Convert to fraction form
    262,361.30/393,502.74 = 72,801.71/x
  3. Step 3: Cross multiply
    262,361.30x = 393,502.74 × 72,801.71
  4. Step 4: Simplify right side
    262,361.30x = 28,647,670,394.17
  5. Step 5: Solve for x
    x = 28,647,670,394.17/262,361.30
  6. Step 6: Final answer
    x = 109,191.68

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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.