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Finding the Fourth Proportional to 255,662.39, 352,815.85 and 142,492.43

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Solution

The fourth proportional to 255,662.39, 352,815.85 and 142,492.43 is: 196,640.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,662.39 : 352,815.85 = 142,492.43 : x
  2. Step 2: Convert to fraction form
    255,662.39/352,815.85 = 142,492.43/x
  3. Step 3: Cross multiply
    255,662.39x = 352,815.85 × 142,492.43
  4. Step 4: Simplify right side
    255,662.39x = 50,273,588,869.17
  5. Step 5: Solve for x
    x = 50,273,588,869.17/255,662.39
  6. Step 6: Final answer
    x = 196,640.53

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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.