Home / 396,916.72-547,748.92-215,630.08

Finding the Fourth Proportional to 396,916.72, 547,748.92 and 215,630.08

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Solution

The fourth proportional to 396,916.72, 547,748.92 and 215,630.08 is: 297,571.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,916.72 : 547,748.92 = 215,630.08 : x
  2. Step 2: Convert to fraction form
    396,916.72/547,748.92 = 215,630.08/x
  3. Step 3: Cross multiply
    396,916.72x = 547,748.92 × 215,630.08
  4. Step 4: Simplify right side
    396,916.72x = 118,111,143,439.51
  5. Step 5: Solve for x
    x = 118,111,143,439.51/396,916.72
  6. Step 6: Final answer
    x = 297,571.60

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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.