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Finding the Fourth Proportional to 396,654.39, 547,180.25 and 253,263.67

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Solution

The fourth proportional to 396,654.39, 547,180.25 and 253,263.67 is: 349,374.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,654.39 : 547,180.25 = 253,263.67 : x
  2. Step 2: Convert to fraction form
    396,654.39/547,180.25 = 253,263.67/x
  3. Step 3: Cross multiply
    396,654.39x = 547,180.25 × 253,263.67
  4. Step 4: Simplify right side
    396,654.39x = 138,580,878,266.52
  5. Step 5: Solve for x
    x = 138,580,878,266.52/396,654.39
  6. Step 6: Final answer
    x = 349,374.37

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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.