Home / 280,924.88-421,429.23-103,418.24

Finding the Fourth Proportional to 280,924.88, 421,429.23 and 103,418.24

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Solution

The fourth proportional to 280,924.88, 421,429.23 and 103,418.24 is: 155,142.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,924.88 : 421,429.23 = 103,418.24 : x
  2. Step 2: Convert to fraction form
    280,924.88/421,429.23 = 103,418.24/x
  3. Step 3: Cross multiply
    280,924.88x = 421,429.23 × 103,418.24
  4. Step 4: Simplify right side
    280,924.88x = 43,583,467,144.01
  5. Step 5: Solve for x
    x = 43,583,467,144.01/280,924.88
  6. Step 6: Final answer
    x = 155,142.78

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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.