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Finding the Fourth Proportional to 280,008.45, 419,843.79 and 111,554.79

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Solution

The fourth proportional to 280,008.45, 419,843.79 and 111,554.79 is: 167,264.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,008.45 : 419,843.79 = 111,554.79 : x
  2. Step 2: Convert to fraction form
    280,008.45/419,843.79 = 111,554.79/x
  3. Step 3: Cross multiply
    280,008.45x = 419,843.79 × 111,554.79
  4. Step 4: Simplify right side
    280,008.45x = 46,835,585,826.25
  5. Step 5: Solve for x
    x = 46,835,585,826.25/280,008.45
  6. Step 6: Final answer
    x = 167,264.90

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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.