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Finding the Fourth Proportional to 330,280.67, 455,788.20 and 194,319.74

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Solution

The fourth proportional to 330,280.67, 455,788.20 and 194,319.74 is: 268,161.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,280.67 : 455,788.20 = 194,319.74 : x
  2. Step 2: Convert to fraction form
    330,280.67/455,788.20 = 194,319.74/x
  3. Step 3: Cross multiply
    330,280.67x = 455,788.20 × 194,319.74
  4. Step 4: Simplify right side
    330,280.67x = 88,568,642,240.13
  5. Step 5: Solve for x
    x = 88,568,642,240.13/330,280.67
  6. Step 6: Final answer
    x = 268,161.75

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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.