Home / 280,621.80-420,932.70-250,878.60

Finding the Fourth Proportional to 280,621.80, 420,932.70 and 250,878.60

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Solution

The fourth proportional to 280,621.80, 420,932.70 and 250,878.60 is: 376,317.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,621.80 : 420,932.70 = 250,878.60 : x
  2. Step 2: Convert to fraction form
    280,621.80/420,932.70 = 250,878.60/x
  3. Step 3: Cross multiply
    280,621.80x = 420,932.70 × 250,878.60
  4. Step 4: Simplify right side
    280,621.80x = 105,603,006,470.22
  5. Step 5: Solve for x
    x = 105,603,006,470.22/280,621.80
  6. Step 6: Final answer
    x = 376,317.90

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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.