Home / 396,501.81-547,173.03-215,213.77

Finding the Fourth Proportional to 396,501.81, 547,173.03 and 215,213.77

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Solution

The fourth proportional to 396,501.81, 547,173.03 and 215,213.77 is: 296,995.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,501.81 : 547,173.03 = 215,213.77 : x
  2. Step 2: Convert to fraction form
    396,501.81/547,173.03 = 215,213.77/x
  3. Step 3: Cross multiply
    396,501.81x = 547,173.03 × 215,213.77
  4. Step 4: Simplify right side
    396,501.81x = 117,759,172,119.64
  5. Step 5: Solve for x
    x = 117,759,172,119.64/396,501.81
  6. Step 6: Final answer
    x = 296,995.30

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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.