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Finding the Fourth Proportional to 396,624.50, 547,338.77 and 215,332.83

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Solution

The fourth proportional to 396,624.50, 547,338.77 and 215,332.83 is: 297,157.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,624.50 : 547,338.77 = 215,332.83 : x
  2. Step 2: Convert to fraction form
    396,624.50/547,338.77 = 215,332.83/x
  3. Step 3: Cross multiply
    396,624.50x = 547,338.77 × 215,332.83
  4. Step 4: Simplify right side
    396,624.50x = 117,860,006,043.65
  5. Step 5: Solve for x
    x = 117,860,006,043.65/396,624.50
  6. Step 6: Final answer
    x = 297,157.66

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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.