Home / 396,822.32-547,618.78-215,537.78

Finding the Fourth Proportional to 396,822.32, 547,618.78 and 215,537.78

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Solution

The fourth proportional to 396,822.32, 547,618.78 and 215,537.78 is: 297,444.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,822.32 : 547,618.78 = 215,537.78 : x
  2. Step 2: Convert to fraction form
    396,822.32/547,618.78 = 215,537.78/x
  3. Step 3: Cross multiply
    396,822.32x = 547,618.78 × 215,537.78
  4. Step 4: Simplify right side
    396,822.32x = 118,032,536,127.51
  5. Step 5: Solve for x
    x = 118,032,536,127.51/396,822.32
  6. Step 6: Final answer
    x = 297,444.30

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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.