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Finding the Fourth Proportional to 395,709.38, 546,105.72 and 223,567.64

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Solution

The fourth proportional to 395,709.38, 546,105.72 and 223,567.64 is: 308,538.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,709.38 : 546,105.72 = 223,567.64 : x
  2. Step 2: Convert to fraction form
    395,709.38/546,105.72 = 223,567.64/x
  3. Step 3: Cross multiply
    395,709.38x = 546,105.72 × 223,567.64
  4. Step 4: Simplify right side
    395,709.38x = 122,091,567,010.90
  5. Step 5: Solve for x
    x = 122,091,567,010.90/395,709.38
  6. Step 6: Final answer
    x = 308,538.47

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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.