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Finding the Fourth Proportional to 330,404.35, 455,949.14 and 194,446.31

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Solution

The fourth proportional to 330,404.35, 455,949.14 and 194,446.31 is: 268,330.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,404.35 : 455,949.14 = 194,446.31 : x
  2. Step 2: Convert to fraction form
    330,404.35/455,949.14 = 194,446.31/x
  3. Step 3: Cross multiply
    330,404.35x = 455,949.14 × 194,446.31
  4. Step 4: Simplify right side
    330,404.35x = 88,657,627,820.67
  5. Step 5: Solve for x
    x = 88,657,627,820.67/330,404.35
  6. Step 6: Final answer
    x = 268,330.69

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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.