Home / 286,263.54-394,393.77-221,510.07

Finding the Fourth Proportional to 286,263.54, 394,393.77 and 221,510.07

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Solution

The fourth proportional to 286,263.54, 394,393.77 and 221,510.07 is: 305,180.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,263.54 : 394,393.77 = 221,510.07 : x
  2. Step 2: Convert to fraction form
    286,263.54/394,393.77 = 221,510.07/x
  3. Step 3: Cross multiply
    286,263.54x = 394,393.77 × 221,510.07
  4. Step 4: Simplify right side
    286,263.54x = 87,362,191,600.26
  5. Step 5: Solve for x
    x = 87,362,191,600.26/286,263.54
  6. Step 6: Final answer
    x = 305,180.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.