Home / 208,400.28-311,185.71-165,803.88

Finding the Fourth Proportional to 208,400.28, 311,185.71 and 165,803.88

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Solution

The fourth proportional to 208,400.28, 311,185.71 and 165,803.88 is: 247,580.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,400.28 : 311,185.71 = 165,803.88 : x
  2. Step 2: Convert to fraction form
    208,400.28/311,185.71 = 165,803.88/x
  3. Step 3: Cross multiply
    208,400.28x = 311,185.71 × 165,803.88
  4. Step 4: Simplify right side
    208,400.28x = 51,595,798,118.55
  5. Step 5: Solve for x
    x = 51,595,798,118.55/208,400.28
  6. Step 6: Final answer
    x = 247,580.27

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.