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Finding the Fourth Proportional to 201,190.40, 301,348.20 and 122,166.80

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Solution

The fourth proportional to 201,190.40, 301,348.20 and 122,166.80 is: 182,984.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,190.40 : 301,348.20 = 122,166.80 : x
  2. Step 2: Convert to fraction form
    201,190.40/301,348.20 = 122,166.80/x
  3. Step 3: Cross multiply
    201,190.40x = 301,348.20 × 122,166.80
  4. Step 4: Simplify right side
    201,190.40x = 36,814,745,279.76
  5. Step 5: Solve for x
    x = 36,814,745,279.76/201,190.40
  6. Step 6: Final answer
    x = 182,984.60

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1.5x scale

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.