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Finding the Fourth Proportional to 395,704.12, 546,059.82 and 225,905.08

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Solution

The fourth proportional to 395,704.12, 546,059.82 and 225,905.08 is: 311,742.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,704.12 : 546,059.82 = 225,905.08 : x
  2. Step 2: Convert to fraction form
    395,704.12/546,059.82 = 225,905.08/x
  3. Step 3: Cross multiply
    395,704.12x = 546,059.82 × 225,905.08
  4. Step 4: Simplify right side
    395,704.12x = 123,357,687,321.89
  5. Step 5: Solve for x
    x = 123,357,687,321.89/395,704.12
  6. Step 6: Final answer
    x = 311,742.24

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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.