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Finding the Fourth Proportional to 201,939.60, 302,909.40 and 200,557.20

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Solution

The fourth proportional to 201,939.60, 302,909.40 and 200,557.20 is: 300,835.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,939.60 : 302,909.40 = 200,557.20 : x
  2. Step 2: Convert to fraction form
    201,939.60/302,909.40 = 200,557.20/x
  3. Step 3: Cross multiply
    201,939.60x = 302,909.40 × 200,557.20
  4. Step 4: Simplify right side
    201,939.60x = 60,750,661,117.68
  5. Step 5: Solve for x
    x = 60,750,661,117.68/201,939.60
  6. Step 6: Final answer
    x = 300,835.80

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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.