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Finding the Fourth Proportional to 307,313.55, 424,061.71 and 171,334.71

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Solution

The fourth proportional to 307,313.55, 424,061.71 and 171,334.71 is: 236,424.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,313.55 : 424,061.71 = 171,334.71 : x
  2. Step 2: Convert to fraction form
    307,313.55/424,061.71 = 171,334.71/x
  3. Step 3: Cross multiply
    307,313.55x = 424,061.71 × 171,334.71
  4. Step 4: Simplify right side
    307,313.55x = 72,656,489,676.62
  5. Step 5: Solve for x
    x = 72,656,489,676.62/307,313.55
  6. Step 6: Final answer
    x = 236,424.62

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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.