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Finding the Fourth Proportional to 307,246.92, 424,002.51 and 171,289.50

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Solution

The fourth proportional to 307,246.92, 424,002.51 and 171,289.50 is: 236,380.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,246.92 : 424,002.51 = 171,289.50 : x
  2. Step 2: Convert to fraction form
    307,246.92/424,002.51 = 171,289.50/x
  3. Step 3: Cross multiply
    307,246.92x = 424,002.51 × 171,289.50
  4. Step 4: Simplify right side
    307,246.92x = 72,627,177,936.65
  5. Step 5: Solve for x
    x = 72,627,177,936.65/307,246.92
  6. Step 6: Final answer
    x = 236,380.49

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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.