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Finding the Fourth Proportional to 396,638.96, 594,959.16 and 278,837.36

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Solution

The fourth proportional to 396,638.96, 594,959.16 and 278,837.36 is: 418,256.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,638.96 : 594,959.16 = 278,837.36 : x
  2. Step 2: Convert to fraction form
    396,638.96/594,959.16 = 278,837.36/x
  3. Step 3: Cross multiply
    396,638.96x = 594,959.16 × 278,837.36
  4. Step 4: Simplify right side
    396,638.96x = 165,896,841,482.22
  5. Step 5: Solve for x
    x = 165,896,841,482.22/396,638.96
  6. Step 6: Final answer
    x = 418,256.55

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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.