Home / 355,915.07-491,184.49-202,982.78

Finding the Fourth Proportional to 355,915.07, 491,184.49 and 202,982.78

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Solution

The fourth proportional to 355,915.07, 491,184.49 and 202,982.78 is: 280,128.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,915.07 : 491,184.49 = 202,982.78 : x
  2. Step 2: Convert to fraction form
    355,915.07/491,184.49 = 202,982.78/x
  3. Step 3: Cross multiply
    355,915.07x = 491,184.49 × 202,982.78
  4. Step 4: Simplify right side
    355,915.07x = 99,701,992,562.75
  5. Step 5: Solve for x
    x = 99,701,992,562.75/355,915.07
  6. Step 6: Final answer
    x = 280,128.60

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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.