Home / 354,939.76-489,810.30-201,974.56

Finding the Fourth Proportional to 354,939.76, 489,810.30 and 201,974.56

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Solution

The fourth proportional to 354,939.76, 489,810.30 and 201,974.56 is: 278,721.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,939.76 : 489,810.30 = 201,974.56 : x
  2. Step 2: Convert to fraction form
    354,939.76/489,810.30 = 201,974.56/x
  3. Step 3: Cross multiply
    354,939.76x = 489,810.30 × 201,974.56
  4. Step 4: Simplify right side
    354,939.76x = 98,929,219,825.97
  5. Step 5: Solve for x
    x = 98,929,219,825.97/354,939.76
  6. Step 6: Final answer
    x = 278,721.15

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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.