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Finding the Fourth Proportional to 307,707, 424,636.20 and 173,571

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Solution

The fourth proportional to 307,707, 424,636.20 and 173,571 is: 239,528.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,707 : 424,636.20 = 173,571 : x
  2. Step 2: Convert to fraction form
    307,707/424,636.20 = 173,571/x
  3. Step 3: Cross multiply
    307,707x = 424,636.20 × 173,571
  4. Step 4: Simplify right side
    307,707x = 73,704,529,870.20
  5. Step 5: Solve for x
    x = 73,704,529,870.20/307,707
  6. Step 6: Final answer
    x = 239,528.28

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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.