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Finding the Fourth Proportional to 202,618.81, 279,619.55 and 111,980.65

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Solution

The fourth proportional to 202,618.81, 279,619.55 and 111,980.65 is: 154,536.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,618.81 : 279,619.55 = 111,980.65 : x
  2. Step 2: Convert to fraction form
    202,618.81/279,619.55 = 111,980.65/x
  3. Step 3: Cross multiply
    202,618.81x = 279,619.55 × 111,980.65
  4. Step 4: Simplify right side
    202,618.81x = 31,311,978,401.80
  5. Step 5: Solve for x
    x = 31,311,978,401.80/202,618.81
  6. Step 6: Final answer
    x = 154,536.38

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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.