Home / 396,498.37-547,153.08-215,206.40

Finding the Fourth Proportional to 396,498.37, 547,153.08 and 215,206.40

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Solution

The fourth proportional to 396,498.37, 547,153.08 and 215,206.40 is: 296,976.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,498.37 : 547,153.08 = 215,206.40 : x
  2. Step 2: Convert to fraction form
    396,498.37/547,153.08 = 215,206.40/x
  3. Step 3: Cross multiply
    396,498.37x = 547,153.08 × 215,206.40
  4. Step 4: Simplify right side
    396,498.37x = 117,750,844,595.71
  5. Step 5: Solve for x
    x = 117,750,844,595.71/396,498.37
  6. Step 6: Final answer
    x = 296,976.87

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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.