Home / 280,627.46-421,107.26-103,259.02

Finding the Fourth Proportional to 280,627.46, 421,107.26 and 103,259.02

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Solution

The fourth proportional to 280,627.46, 421,107.26 and 103,259.02 is: 154,949.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,627.46 : 421,107.26 = 103,259.02 : x
  2. Step 2: Convert to fraction form
    280,627.46/421,107.26 = 103,259.02/x
  3. Step 3: Cross multiply
    280,627.46x = 421,107.26 × 103,259.02
  4. Step 4: Simplify right side
    280,627.46x = 43,483,122,982.49
  5. Step 5: Solve for x
    x = 43,483,122,982.49/280,627.46
  6. Step 6: Final answer
    x = 154,949.64

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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.