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Finding the Fourth Proportional to 307,651.81, 424,558.68 and 171,684.28

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Solution

The fourth proportional to 307,651.81, 424,558.68 and 171,684.28 is: 236,923.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,651.81 : 424,558.68 = 171,684.28 : x
  2. Step 2: Convert to fraction form
    307,651.81/424,558.68 = 171,684.28/x
  3. Step 3: Cross multiply
    307,651.81x = 424,558.68 × 171,684.28
  4. Step 4: Simplify right side
    307,651.81x = 72,890,051,293.55
  5. Step 5: Solve for x
    x = 72,890,051,293.55/307,651.81
  6. Step 6: Final answer
    x = 236,923.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.