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Finding the Fourth Proportional to 396,911.34, 547,741.44 and 215,624.63

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Solution

The fourth proportional to 396,911.34, 547,741.44 and 215,624.63 is: 297,564.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,911.34 : 547,741.44 = 215,624.63 : x
  2. Step 2: Convert to fraction form
    396,911.34/547,741.44 = 215,624.63/x
  3. Step 3: Cross multiply
    396,911.34x = 547,741.44 × 215,624.63
  4. Step 4: Simplify right side
    396,911.34x = 118,106,546,705.02
  5. Step 5: Solve for x
    x = 118,106,546,705.02/396,911.34
  6. Step 6: Final answer
    x = 297,564.05

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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.