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Finding the Fourth Proportional to 360,080.21, 496,915.90 and 198,938.97

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Solution

The fourth proportional to 360,080.21, 496,915.90 and 198,938.97 is: 274,538.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    360,080.21 : 496,915.90 = 198,938.97 : x
  2. Step 2: Convert to fraction form
    360,080.21/496,915.90 = 198,938.97/x
  3. Step 3: Cross multiply
    360,080.21x = 496,915.90 × 198,938.97
  4. Step 4: Simplify right side
    360,080.21x = 98,855,939,760.91
  5. Step 5: Solve for x
    x = 98,855,939,760.91/360,080.21
  6. Step 6: Final answer
    x = 274,538.66

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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.