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Finding the Fourth Proportional to 202,310.12, 279,200.10 and 112,891.88

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Solution

The fourth proportional to 202,310.12, 279,200.10 and 112,891.88 is: 155,797.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,310.12 : 279,200.10 = 112,891.88 : x
  2. Step 2: Convert to fraction form
    202,310.12/279,200.10 = 112,891.88/x
  3. Step 3: Cross multiply
    202,310.12x = 279,200.10 × 112,891.88
  4. Step 4: Simplify right side
    202,310.12x = 31,519,424,185.19
  5. Step 5: Solve for x
    x = 31,519,424,185.19/202,310.12
  6. Step 6: Final answer
    x = 155,797.57

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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.