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Finding the Fourth Proportional to 305,916.88, 422,232.82 and 169,997.57

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Solution

The fourth proportional to 305,916.88, 422,232.82 and 169,997.57 is: 234,634.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,916.88 : 422,232.82 = 169,997.57 : x
  2. Step 2: Convert to fraction form
    305,916.88/422,232.82 = 169,997.57/x
  3. Step 3: Cross multiply
    305,916.88x = 422,232.82 × 169,997.57
  4. Step 4: Simplify right side
    305,916.88x = 71,778,553,374.25
  5. Step 5: Solve for x
    x = 71,778,553,374.25/305,916.88
  6. Step 6: Final answer
    x = 234,634.17

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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.