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Finding the Fourth Proportional to 201,628.60, 302,540.10 and 142,336.60

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Solution

The fourth proportional to 201,628.60, 302,540.10 and 142,336.60 is: 213,573.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,628.60 : 302,540.10 = 142,336.60 : x
  2. Step 2: Convert to fraction form
    201,628.60/302,540.10 = 142,336.60/x
  3. Step 3: Cross multiply
    201,628.60x = 302,540.10 × 142,336.60
  4. Step 4: Simplify right side
    201,628.60x = 43,062,529,197.66
  5. Step 5: Solve for x
    x = 43,062,529,197.66/201,628.60
  6. Step 6: Final answer
    x = 213,573.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.