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Finding the Fourth Proportional to 300,821.39, 415,080.91 and 171,700.91

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Solution

The fourth proportional to 300,821.39, 415,080.91 and 171,700.91 is: 236,917.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,821.39 : 415,080.91 = 171,700.91 : x
  2. Step 2: Convert to fraction form
    300,821.39/415,080.91 = 171,700.91/x
  3. Step 3: Cross multiply
    300,821.39x = 415,080.91 × 171,700.91
  4. Step 4: Simplify right side
    300,821.39x = 71,269,771,035.42
  5. Step 5: Solve for x
    x = 71,269,771,035.42/300,821.39
  6. Step 6: Final answer
    x = 236,917.23

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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.