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Finding the Fourth Proportional to 200,046.60, 300,069.90 and 190,861.20

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Solution

The fourth proportional to 200,046.60, 300,069.90 and 190,861.20 is: 286,291.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,046.60 : 300,069.90 = 190,861.20 : x
  2. Step 2: Convert to fraction form
    200,046.60/300,069.90 = 190,861.20/x
  3. Step 3: Cross multiply
    200,046.60x = 300,069.90 × 190,861.20
  4. Step 4: Simplify right side
    200,046.60x = 57,271,701,197.88
  5. Step 5: Solve for x
    x = 57,271,701,197.88/200,046.60
  6. Step 6: Final answer
    x = 286,291.80

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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.