Home / 454,943.70-682,415.55-139,359.60

Finding the Fourth Proportional to 454,943.70, 682,415.55 and 139,359.60

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Solution

The fourth proportional to 454,943.70, 682,415.55 and 139,359.60 is: 209,039.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,943.70 : 682,415.55 = 139,359.60 : x
  2. Step 2: Convert to fraction form
    454,943.70/682,415.55 = 139,359.60/x
  3. Step 3: Cross multiply
    454,943.70x = 682,415.55 × 139,359.60
  4. Step 4: Simplify right side
    454,943.70x = 95,101,158,081.78
  5. Step 5: Solve for x
    x = 95,101,158,081.78/454,943.70
  6. Step 6: Final answer
    x = 209,039.40

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Similar ratio
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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.