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Finding the Fourth Proportional to 395,310.12, 545,528.32 and 214,022.20

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Solution

The fourth proportional to 395,310.12, 545,528.32 and 214,022.20 is: 295,350.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,310.12 : 545,528.32 = 214,022.20 : x
  2. Step 2: Convert to fraction form
    395,310.12/545,528.32 = 214,022.20/x
  3. Step 3: Cross multiply
    395,310.12x = 545,528.32 × 214,022.20
  4. Step 4: Simplify right side
    395,310.12x = 116,755,171,208.70
  5. Step 5: Solve for x
    x = 116,755,171,208.70/395,310.12
  6. Step 6: Final answer
    x = 295,350.83

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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.