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Finding the Fourth Proportional to 396,801.52, 547,592.64 and 215,513.58

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Solution

The fourth proportional to 396,801.52, 547,592.64 and 215,513.58 is: 297,412.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,801.52 : 547,592.64 = 215,513.58 : x
  2. Step 2: Convert to fraction form
    396,801.52/547,592.64 = 215,513.58/x
  3. Step 3: Cross multiply
    396,801.52x = 547,592.64 × 215,513.58
  4. Step 4: Simplify right side
    396,801.52x = 118,013,651,473.35
  5. Step 5: Solve for x
    x = 118,013,651,473.35/396,801.52
  6. Step 6: Final answer
    x = 297,412.30

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1.5x scale

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.