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Finding the Fourth Proportional to 307,328.39, 424,111.42 and 171,363.97

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Solution

The fourth proportional to 307,328.39, 424,111.42 and 171,363.97 is: 236,481.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,328.39 : 424,111.42 = 171,363.97 : x
  2. Step 2: Convert to fraction form
    307,328.39/424,111.42 = 171,363.97/x
  3. Step 3: Cross multiply
    307,328.39x = 424,111.42 × 171,363.97
  4. Step 4: Simplify right side
    307,328.39x = 72,677,417,397.88
  5. Step 5: Solve for x
    x = 72,677,417,397.88/307,328.39
  6. Step 6: Final answer
    x = 236,481.30

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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.