Home / 396,428.70-547,075.62-215,142.24

Finding the Fourth Proportional to 396,428.70, 547,075.62 and 215,142.24

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Solution

The fourth proportional to 396,428.70, 547,075.62 and 215,142.24 is: 296,898.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,428.70 : 547,075.62 = 215,142.24 : x
  2. Step 2: Convert to fraction form
    396,428.70/547,075.62 = 215,142.24/x
  3. Step 3: Cross multiply
    396,428.70x = 547,075.62 × 215,142.24
  4. Step 4: Simplify right side
    396,428.70x = 117,699,074,336.19
  5. Step 5: Solve for x
    x = 117,699,074,336.19/396,428.70
  6. Step 6: Final answer
    x = 296,898.47

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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.