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Finding the Fourth Proportional to 319,508.39, 440,921.57 and 176,268.44

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Solution

The fourth proportional to 319,508.39, 440,921.57 and 176,268.44 is: 243,250.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,508.39 : 440,921.57 = 176,268.44 : x
  2. Step 2: Convert to fraction form
    319,508.39/440,921.57 = 176,268.44/x
  3. Step 3: Cross multiply
    319,508.39x = 440,921.57 × 176,268.44
  4. Step 4: Simplify right side
    319,508.39x = 77,720,557,527.21
  5. Step 5: Solve for x
    x = 77,720,557,527.21/319,508.39
  6. Step 6: Final answer
    x = 243,250.44

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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.