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Finding the Fourth Proportional to 285,046.70, 393,371.64 and 171,876.74

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Solution

The fourth proportional to 285,046.70, 393,371.64 and 171,876.74 is: 237,194.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,046.70 : 393,371.64 = 171,876.74 : x
  2. Step 2: Convert to fraction form
    285,046.70/393,371.64 = 171,876.74/x
  3. Step 3: Cross multiply
    285,046.70x = 393,371.64 × 171,876.74
  4. Step 4: Simplify right side
    285,046.70x = 67,611,433,124.80
  5. Step 5: Solve for x
    x = 67,611,433,124.80/285,046.70
  6. Step 6: Final answer
    x = 237,194.24

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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.