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Finding the Fourth Proportional to 381,736.80, 572,605.20 and 342,370.80

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Solution

The fourth proportional to 381,736.80, 572,605.20 and 342,370.80 is: 513,556.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,736.80 : 572,605.20 = 342,370.80 : x
  2. Step 2: Convert to fraction form
    381,736.80/572,605.20 = 342,370.80/x
  3. Step 3: Cross multiply
    381,736.80x = 572,605.20 × 342,370.80
  4. Step 4: Simplify right side
    381,736.80x = 196,043,300,408.16
  5. Step 5: Solve for x
    x = 196,043,300,408.16/381,736.80
  6. Step 6: Final answer
    x = 513,556.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.