Home / 263,510.13-395,205.95-121,218.78

Finding the Fourth Proportional to 263,510.13, 395,205.95 and 121,218.78

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Solution

The fourth proportional to 263,510.13, 395,205.95 and 121,218.78 is: 181,800.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,510.13 : 395,205.95 = 121,218.78 : x
  2. Step 2: Convert to fraction form
    263,510.13/395,205.95 = 121,218.78/x
  3. Step 3: Cross multiply
    263,510.13x = 395,205.95 × 121,218.78
  4. Step 4: Simplify right side
    263,510.13x = 47,906,382,669.78
  5. Step 5: Solve for x
    x = 47,906,382,669.78/263,510.13
  6. Step 6: Final answer
    x = 181,800.92

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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.