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Finding the Fourth Proportional to 396,393, 547,022.34 and 237,417

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Solution

The fourth proportional to 396,393, 547,022.34 and 237,417 is: 327,635.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,393 : 547,022.34 = 237,417 : x
  2. Step 2: Convert to fraction form
    396,393/547,022.34 = 237,417/x
  3. Step 3: Cross multiply
    396,393x = 547,022.34 × 237,417
  4. Step 4: Simplify right side
    396,393x = 129,872,402,895.78
  5. Step 5: Solve for x
    x = 129,872,402,895.78/396,393
  6. Step 6: Final answer
    x = 327,635.46

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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.