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Finding the Fourth Proportional to 431,892, 595,973.60 and 278,936.87

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Solution

The fourth proportional to 431,892, 595,973.60 and 278,936.87 is: 384,908.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,892 : 595,973.60 = 278,936.87 : x
  2. Step 2: Convert to fraction form
    431,892/595,973.60 = 278,936.87/x
  3. Step 3: Cross multiply
    431,892x = 595,973.60 × 278,936.87
  4. Step 4: Simplify right side
    431,892x = 166,239,007,258.09
  5. Step 5: Solve for x
    x = 166,239,007,258.09/431,892
  6. Step 6: Final answer
    x = 384,908.74

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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.