Home / 309,449.51-427,180.20-194,896.50

Finding the Fourth Proportional to 309,449.51, 427,180.20 and 194,896.50

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Solution

The fourth proportional to 309,449.51, 427,180.20 and 194,896.50 is: 269,045.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,449.51 : 427,180.20 = 194,896.50 : x
  2. Step 2: Convert to fraction form
    309,449.51/427,180.20 = 194,896.50/x
  3. Step 3: Cross multiply
    309,449.51x = 427,180.20 × 194,896.50
  4. Step 4: Simplify right side
    309,449.51x = 83,255,925,849.30
  5. Step 5: Solve for x
    x = 83,255,925,849.30/309,449.51
  6. Step 6: Final answer
    x = 269,045.27

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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.