Home / 396,665.08-547,401.75-215,378.50

Finding the Fourth Proportional to 396,665.08, 547,401.75 and 215,378.50

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Solution

The fourth proportional to 396,665.08, 547,401.75 and 215,378.50 is: 297,224.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,665.08 : 547,401.75 = 215,378.50 : x
  2. Step 2: Convert to fraction form
    396,665.08/547,401.75 = 215,378.50/x
  3. Step 3: Cross multiply
    396,665.08x = 547,401.75 × 215,378.50
  4. Step 4: Simplify right side
    396,665.08x = 117,898,565,636.20
  5. Step 5: Solve for x
    x = 117,898,565,636.20/396,665.08
  6. Step 6: Final answer
    x = 297,224.46

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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.