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Finding the Fourth Proportional to 280,955.36, 421,015.48 and 168,503.88

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Solution

The fourth proportional to 280,955.36, 421,015.48 and 168,503.88 is: 252,505.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,955.36 : 421,015.48 = 168,503.88 : x
  2. Step 2: Convert to fraction form
    280,955.36/421,015.48 = 168,503.88/x
  3. Step 3: Cross multiply
    280,955.36x = 421,015.48 × 168,503.88
  4. Step 4: Simplify right side
    280,955.36x = 70,942,741,920.06
  5. Step 5: Solve for x
    x = 70,942,741,920.06/280,955.36
  6. Step 6: Final answer
    x = 252,505.39

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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.