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Finding the Fourth Proportional to 290,824.65, 436,236.17 and 91,145.88

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Solution

The fourth proportional to 290,824.65, 436,236.17 and 91,145.88 is: 136,718.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,824.65 : 436,236.17 = 91,145.88 : x
  2. Step 2: Convert to fraction form
    290,824.65/436,236.17 = 91,145.88/x
  3. Step 3: Cross multiply
    290,824.65x = 436,236.17 × 91,145.88
  4. Step 4: Simplify right side
    290,824.65x = 39,761,129,146.75
  5. Step 5: Solve for x
    x = 39,761,129,146.75/290,824.65
  6. Step 6: Final answer
    x = 136,718.57

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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.