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Finding the Fourth Proportional to 395,507.88, 545,801.22 and 216,659.88

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Solution

The fourth proportional to 395,507.88, 545,801.22 and 216,659.88 is: 298,990.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,507.88 : 545,801.22 = 216,659.88 : x
  2. Step 2: Convert to fraction form
    395,507.88/545,801.22 = 216,659.88/x
  3. Step 3: Cross multiply
    395,507.88x = 545,801.22 × 216,659.88
  4. Step 4: Simplify right side
    395,507.88x = 118,253,226,829.05
  5. Step 5: Solve for x
    x = 118,253,226,829.05/395,507.88
  6. Step 6: Final answer
    x = 298,990.82

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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.