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Finding the Fourth Proportional to 307,709, 424,638.96 and 173,573

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Solution

The fourth proportional to 307,709, 424,638.96 and 173,573 is: 239,531.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,709 : 424,638.96 = 173,573 : x
  2. Step 2: Convert to fraction form
    307,709/424,638.96 = 173,573/x
  3. Step 3: Cross multiply
    307,709x = 424,638.96 × 173,573
  4. Step 4: Simplify right side
    307,709x = 73,705,858,204.08
  5. Step 5: Solve for x
    x = 73,705,858,204.08/307,709
  6. Step 6: Final answer
    x = 239,531.04

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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.