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Finding the Fourth Proportional to 307,707.50, 424,636.89 and 173,571.50

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Solution

The fourth proportional to 307,707.50, 424,636.89 and 173,571.50 is: 239,528.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,707.50 : 424,636.89 = 173,571.50 : x
  2. Step 2: Convert to fraction form
    307,707.50/424,636.89 = 173,571.50/x
  3. Step 3: Cross multiply
    307,707.50x = 424,636.89 × 173,571.50
  4. Step 4: Simplify right side
    307,707.50x = 73,704,861,952.64
  5. Step 5: Solve for x
    x = 73,704,861,952.64/307,707.50
  6. Step 6: Final answer
    x = 239,528.97

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1.5x scale

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.