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Finding the Fourth Proportional to 322,891.20, 484,336.80 and 252,830.40

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Solution

The fourth proportional to 322,891.20, 484,336.80 and 252,830.40 is: 379,245.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,891.20 : 484,336.80 = 252,830.40 : x
  2. Step 2: Convert to fraction form
    322,891.20/484,336.80 = 252,830.40/x
  3. Step 3: Cross multiply
    322,891.20x = 484,336.80 × 252,830.40
  4. Step 4: Simplify right side
    322,891.20x = 122,455,066,878.72
  5. Step 5: Solve for x
    x = 122,455,066,878.72/322,891.20
  6. Step 6: Final answer
    x = 379,245.60

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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.