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Finding the Fourth Proportional to 316,990.37, 437,491.56 and 196,170.56

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Solution

The fourth proportional to 316,990.37, 437,491.56 and 196,170.56 is: 270,743.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,990.37 : 437,491.56 = 196,170.56 : x
  2. Step 2: Convert to fraction form
    316,990.37/437,491.56 = 196,170.56/x
  3. Step 3: Cross multiply
    316,990.37x = 437,491.56 × 196,170.56
  4. Step 4: Simplify right side
    316,990.37x = 85,822,962,133.02
  5. Step 5: Solve for x
    x = 85,822,962,133.02/316,990.37
  6. Step 6: Final answer
    x = 270,743.13

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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.