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Finding the Fourth Proportional to 280,251.90, 420,544.00 and 262,519.79

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Solution

The fourth proportional to 280,251.90, 420,544.00 and 262,519.79 is: 393,935.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,251.90 : 420,544.00 = 262,519.79 : x
  2. Step 2: Convert to fraction form
    280,251.90/420,544.00 = 262,519.79/x
  3. Step 3: Cross multiply
    280,251.90x = 420,544.00 × 262,519.79
  4. Step 4: Simplify right side
    280,251.90x = 110,401,120,791.19
  5. Step 5: Solve for x
    x = 110,401,120,791.19/280,251.90
  6. Step 6: Final answer
    x = 393,935.32

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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.