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Finding the Fourth Proportional to 354,965.04, 489,851.19 and 227,640.42

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Solution

The fourth proportional to 354,965.04, 489,851.19 and 227,640.42 is: 314,143.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,965.04 : 489,851.19 = 227,640.42 : x
  2. Step 2: Convert to fraction form
    354,965.04/489,851.19 = 227,640.42/x
  3. Step 3: Cross multiply
    354,965.04x = 489,851.19 × 227,640.42
  4. Step 4: Simplify right side
    354,965.04x = 111,509,930,629.10
  5. Step 5: Solve for x
    x = 111,509,930,629.10/354,965.04
  6. Step 6: Final answer
    x = 314,143.42

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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.