Home / 280,334.17-420,205.96-139,797.55

Finding the Fourth Proportional to 280,334.17, 420,205.96 and 139,797.55

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Solution

The fourth proportional to 280,334.17, 420,205.96 and 139,797.55 is: 209,549.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,334.17 : 420,205.96 = 139,797.55 : x
  2. Step 2: Convert to fraction form
    280,334.17/420,205.96 = 139,797.55/x
  3. Step 3: Cross multiply
    280,334.17x = 420,205.96 × 139,797.55
  4. Step 4: Simplify right side
    280,334.17x = 58,743,763,004.41
  5. Step 5: Solve for x
    x = 58,743,763,004.41/280,334.17
  6. Step 6: Final answer
    x = 209,549.06

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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.