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Finding the Fourth Proportional to 321,857.60, 482,786.40 and 301,121.60

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Solution

The fourth proportional to 321,857.60, 482,786.40 and 301,121.60 is: 451,682.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,857.60 : 482,786.40 = 301,121.60 : x
  2. Step 2: Convert to fraction form
    321,857.60/482,786.40 = 301,121.60/x
  3. Step 3: Cross multiply
    321,857.60x = 482,786.40 × 301,121.60
  4. Step 4: Simplify right side
    321,857.60x = 145,377,413,226.24
  5. Step 5: Solve for x
    x = 145,377,413,226.24/321,857.60
  6. Step 6: Final answer
    x = 451,682.40

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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.