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Finding the Fourth Proportional to 280,632.99, 420,687.05 and 103,092.33

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Solution

The fourth proportional to 280,632.99, 420,687.05 and 103,092.33 is: 154,542.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,632.99 : 420,687.05 = 103,092.33 : x
  2. Step 2: Convert to fraction form
    280,632.99/420,687.05 = 103,092.33/x
  3. Step 3: Cross multiply
    280,632.99x = 420,687.05 × 103,092.33
  4. Step 4: Simplify right side
    280,632.99x = 43,369,608,185.33
  5. Step 5: Solve for x
    x = 43,369,608,185.33/280,632.99
  6. Step 6: Final answer
    x = 154,542.09

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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.