Home / 280,022.20-420,033.30-251,153.80

Finding the Fourth Proportional to 280,022.20, 420,033.30 and 251,153.80

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Solution

The fourth proportional to 280,022.20, 420,033.30 and 251,153.80 is: 376,730.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,022.20 : 420,033.30 = 251,153.80 : x
  2. Step 2: Convert to fraction form
    280,022.20/420,033.30 = 251,153.80/x
  3. Step 3: Cross multiply
    280,022.20x = 420,033.30 × 251,153.80
  4. Step 4: Simplify right side
    280,022.20x = 105,492,959,421.54
  5. Step 5: Solve for x
    x = 105,492,959,421.54/280,022.20
  6. Step 6: Final answer
    x = 376,730.70

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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.