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Finding the Fourth Proportional to 202,331.42, 279,217.41 and 111,687.45

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Solution

The fourth proportional to 202,331.42, 279,217.41 and 111,687.45 is: 154,128.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,331.42 : 279,217.41 = 111,687.45 : x
  2. Step 2: Convert to fraction form
    202,331.42/279,217.41 = 111,687.45/x
  3. Step 3: Cross multiply
    202,331.42x = 279,217.41 × 111,687.45
  4. Step 4: Simplify right side
    202,331.42x = 31,185,080,518.50
  5. Step 5: Solve for x
    x = 31,185,080,518.50/202,331.42
  6. Step 6: Final answer
    x = 154,128.71

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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.