Home / 208,401.28-311,187.20-165,804.88

Finding the Fourth Proportional to 208,401.28, 311,187.20 and 165,804.88

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Solution

The fourth proportional to 208,401.28, 311,187.20 and 165,804.88 is: 247,581.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,401.28 : 311,187.20 = 165,804.88 : x
  2. Step 2: Convert to fraction form
    208,401.28/311,187.20 = 165,804.88/x
  3. Step 3: Cross multiply
    208,401.28x = 311,187.20 × 165,804.88
  4. Step 4: Simplify right side
    208,401.28x = 51,596,356,353.54
  5. Step 5: Solve for x
    x = 51,596,356,353.54/208,401.28
  6. Step 6: Final answer
    x = 247,581.76

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1.5x scale

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.