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Finding the Fourth Proportional to 201,010.20, 301,515.30 and 190,123.80

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Solution

The fourth proportional to 201,010.20, 301,515.30 and 190,123.80 is: 285,185.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,010.20 : 301,515.30 = 190,123.80 : x
  2. Step 2: Convert to fraction form
    201,010.20/301,515.30 = 190,123.80/x
  3. Step 3: Cross multiply
    201,010.20x = 301,515.30 × 190,123.80
  4. Step 4: Simplify right side
    201,010.20x = 57,325,234,594.14
  5. Step 5: Solve for x
    x = 57,325,234,594.14/201,010.20
  6. Step 6: Final answer
    x = 285,185.70

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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.