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Finding the Fourth Proportional to 290,847.84, 436,036.38 and 130,806.56

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Solution

The fourth proportional to 290,847.84, 436,036.38 and 130,806.56 is: 196,103.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,847.84 : 436,036.38 = 130,806.56 : x
  2. Step 2: Convert to fraction form
    290,847.84/436,036.38 = 130,806.56/x
  3. Step 3: Cross multiply
    290,847.84x = 436,036.38 × 130,806.56
  4. Step 4: Simplify right side
    290,847.84x = 57,036,416,722.47
  5. Step 5: Solve for x
    x = 57,036,416,722.47/290,847.84
  6. Step 6: Final answer
    x = 196,103.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.