Home / 265,630.19-398,563.34-139,240.62

Finding the Fourth Proportional to 265,630.19, 398,563.34 and 139,240.62

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Solution

The fourth proportional to 265,630.19, 398,563.34 and 139,240.62 is: 208,922.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,630.19 : 398,563.34 = 139,240.62 : x
  2. Step 2: Convert to fraction form
    265,630.19/398,563.34 = 139,240.62/x
  3. Step 3: Cross multiply
    265,630.19x = 398,563.34 × 139,240.62
  4. Step 4: Simplify right side
    265,630.19x = 55,496,205,874.67
  5. Step 5: Solve for x
    x = 55,496,205,874.67/265,630.19
  6. Step 6: Final answer
    x = 208,922.81

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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.