Home / 396,430.26-547,077.78-215,143.77

Finding the Fourth Proportional to 396,430.26, 547,077.78 and 215,143.77

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Solution

The fourth proportional to 396,430.26, 547,077.78 and 215,143.77 is: 296,900.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,430.26 : 547,077.78 = 215,143.77 : x
  2. Step 2: Convert to fraction form
    396,430.26/547,077.78 = 215,143.77/x
  3. Step 3: Cross multiply
    396,430.26x = 547,077.78 × 215,143.77
  4. Step 4: Simplify right side
    396,430.26x = 117,700,376,072.43
  5. Step 5: Solve for x
    x = 117,700,376,072.43/396,430.26
  6. Step 6: Final answer
    x = 296,900.58

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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.