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Finding the Fourth Proportional to 201,957.60, 302,936.40 and 131,455.20

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Solution

The fourth proportional to 201,957.60, 302,936.40 and 131,455.20 is: 197,182.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,957.60 : 302,936.40 = 131,455.20 : x
  2. Step 2: Convert to fraction form
    201,957.60/302,936.40 = 131,455.20/x
  3. Step 3: Cross multiply
    201,957.60x = 302,936.40 × 131,455.20
  4. Step 4: Simplify right side
    201,957.60x = 39,822,565,049.28
  5. Step 5: Solve for x
    x = 39,822,565,049.28/201,957.60
  6. Step 6: Final answer
    x = 197,182.80

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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.