Home / 280,065.96-419,975.28-80,341.02

Finding the Fourth Proportional to 280,065.96, 419,975.28 and 80,341.02

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Solution

The fourth proportional to 280,065.96, 419,975.28 and 80,341.02 is: 120,476.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,065.96 : 419,975.28 = 80,341.02 : x
  2. Step 2: Convert to fraction form
    280,065.96/419,975.28 = 80,341.02/x
  3. Step 3: Cross multiply
    280,065.96x = 419,975.28 × 80,341.02
  4. Step 4: Simplify right side
    280,065.96x = 33,741,242,369.99
  5. Step 5: Solve for x
    x = 33,741,242,369.99/280,065.96
  6. Step 6: Final answer
    x = 120,476.06

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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.