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Finding the Fourth Proportional to 279,009.40, 418,514.10 and 200,860.60

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Solution

The fourth proportional to 279,009.40, 418,514.10 and 200,860.60 is: 301,290.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,009.40 : 418,514.10 = 200,860.60 : x
  2. Step 2: Convert to fraction form
    279,009.40/418,514.10 = 200,860.60/x
  3. Step 3: Cross multiply
    279,009.40x = 418,514.10 × 200,860.60
  4. Step 4: Simplify right side
    279,009.40x = 84,062,993,234.46
  5. Step 5: Solve for x
    x = 84,062,993,234.46/279,009.40
  6. Step 6: Final answer
    x = 301,290.90

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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.