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Finding the Fourth Proportional to 285,252.84, 393,662.03 and 157,928.54

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Solution

The fourth proportional to 285,252.84, 393,662.03 and 157,928.54 is: 217,948.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,252.84 : 393,662.03 = 157,928.54 : x
  2. Step 2: Convert to fraction form
    285,252.84/393,662.03 = 157,928.54/x
  3. Step 3: Cross multiply
    285,252.84x = 393,662.03 × 157,928.54
  4. Step 4: Simplify right side
    285,252.84x = 62,170,466,893.38
  5. Step 5: Solve for x
    x = 62,170,466,893.38/285,252.84
  6. Step 6: Final answer
    x = 217,948.63

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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.