Home / 280,128.20-419,414.70-272,352.20

Finding the Fourth Proportional to 280,128.20, 419,414.70 and 272,352.20

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Solution

The fourth proportional to 280,128.20, 419,414.70 and 272,352.20 is: 407,772.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,128.20 : 419,414.70 = 272,352.20 : x
  2. Step 2: Convert to fraction form
    280,128.20/419,414.70 = 272,352.20/x
  3. Step 3: Cross multiply
    280,128.20x = 419,414.70 × 272,352.20
  4. Step 4: Simplify right side
    280,128.20x = 114,228,516,257.34
  5. Step 5: Solve for x
    x = 114,228,516,257.34/280,128.20
  6. Step 6: Final answer
    x = 407,772.29

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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.