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Finding the Fourth Proportional to 395,309.76, 545,523.46 and 214,016.88

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Solution

The fourth proportional to 395,309.76, 545,523.46 and 214,016.88 is: 295,341.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,309.76 : 545,523.46 = 214,016.88 : x
  2. Step 2: Convert to fraction form
    395,309.76/545,523.46 = 214,016.88/x
  3. Step 3: Cross multiply
    395,309.76x = 545,523.46 × 214,016.88
  4. Step 4: Simplify right side
    395,309.76x = 116,751,228,876.01
  5. Step 5: Solve for x
    x = 116,751,228,876.01/395,309.76
  6. Step 6: Final answer
    x = 295,341.12

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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.