Home / 280,105.20-419,501.70-190,875.60

Finding the Fourth Proportional to 280,105.20, 419,501.70 and 190,875.60

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Solution

The fourth proportional to 280,105.20, 419,501.70 and 190,875.60 is: 285,866.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,105.20 : 419,501.70 = 190,875.60 : x
  2. Step 2: Convert to fraction form
    280,105.20/419,501.70 = 190,875.60/x
  3. Step 3: Cross multiply
    280,105.20x = 419,501.70 × 190,875.60
  4. Step 4: Simplify right side
    280,105.20x = 80,072,638,688.52
  5. Step 5: Solve for x
    x = 80,072,638,688.52/280,105.20
  6. Step 6: Final answer
    x = 285,866.31

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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.