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Finding the Fourth Proportional to 309,668.72, 426,848.94 and 233,072.64

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Solution

The fourth proportional to 309,668.72, 426,848.94 and 233,072.64 is: 321,268.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,668.72 : 426,848.94 = 233,072.64 : x
  2. Step 2: Convert to fraction form
    309,668.72/426,848.94 = 233,072.64/x
  3. Step 3: Cross multiply
    309,668.72x = 426,848.94 × 233,072.64
  4. Step 4: Simplify right side
    309,668.72x = 99,486,809,327.00
  5. Step 5: Solve for x
    x = 99,486,809,327.00/309,668.72
  6. Step 6: Final answer
    x = 321,268.51

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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.