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Finding the Fourth Proportional to 423,228.98, 635,021.52 and 263,438.54

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Solution

The fourth proportional to 423,228.98, 635,021.52 and 263,438.54 is: 395,268.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,228.98 : 635,021.52 = 263,438.54 : x
  2. Step 2: Convert to fraction form
    423,228.98/635,021.52 = 263,438.54/x
  3. Step 3: Cross multiply
    423,228.98x = 635,021.52 × 263,438.54
  4. Step 4: Simplify right side
    423,228.98x = 167,289,142,097.38
  5. Step 5: Solve for x
    x = 167,289,142,097.38/423,228.98
  6. Step 6: Final answer
    x = 395,268.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.