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Finding the Fourth Proportional to 481,306.75, 663,994.77 and 290,213.98

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Solution

The fourth proportional to 481,306.75, 663,994.77 and 290,213.98 is: 400,369.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,306.75 : 663,994.77 = 290,213.98 : x
  2. Step 2: Convert to fraction form
    481,306.75/663,994.77 = 290,213.98/x
  3. Step 3: Cross multiply
    481,306.75x = 663,994.77 × 290,213.98
  4. Step 4: Simplify right side
    481,306.75x = 192,700,568,336.25
  5. Step 5: Solve for x
    x = 192,700,568,336.25/481,306.75
  6. Step 6: Final answer
    x = 400,369.55

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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.