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Finding the Fourth Proportional to 436,930.20, 655,416.90 and 226,978.20

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Solution

The fourth proportional to 436,930.20, 655,416.90 and 226,978.20 is: 340,478.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,930.20 : 655,416.90 = 226,978.20 : x
  2. Step 2: Convert to fraction form
    436,930.20/655,416.90 = 226,978.20/x
  3. Step 3: Cross multiply
    436,930.20x = 655,416.90 × 226,978.20
  4. Step 4: Simplify right side
    436,930.20x = 148,765,348,211.58
  5. Step 5: Solve for x
    x = 148,765,348,211.58/436,930.20
  6. Step 6: Final answer
    x = 340,478.52

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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.