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Finding the Fourth Proportional to 280,252.90, 420,545.50 and 262,520.79

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Solution

The fourth proportional to 280,252.90, 420,545.50 and 262,520.79 is: 393,936.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,252.90 : 420,545.50 = 262,520.79 : x
  2. Step 2: Convert to fraction form
    280,252.90/420,545.50 = 262,520.79/x
  3. Step 3: Cross multiply
    280,252.90x = 420,545.50 × 262,520.79
  4. Step 4: Simplify right side
    280,252.90x = 110,401,936,890.95
  5. Step 5: Solve for x
    x = 110,401,936,890.95/280,252.90
  6. Step 6: Final answer
    x = 393,936.82

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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.