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Finding the Fourth Proportional to 300,981.35, 415,354.15 and 165,012.39

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Solution

The fourth proportional to 300,981.35, 415,354.15 and 165,012.39 is: 227,717.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,981.35 : 415,354.15 = 165,012.39 : x
  2. Step 2: Convert to fraction form
    300,981.35/415,354.15 = 165,012.39/x
  3. Step 3: Cross multiply
    300,981.35x = 415,354.15 × 165,012.39
  4. Step 4: Simplify right side
    300,981.35x = 68,538,580,987.92
  5. Step 5: Solve for x
    x = 68,538,580,987.92/300,981.35
  6. Step 6: Final answer
    x = 227,717.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.