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Finding the Fourth Proportional to 291,160.17, 436,736.21 and 91,492.74

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Solution

The fourth proportional to 291,160.17, 436,736.21 and 91,492.74 is: 137,237.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,160.17 : 436,736.21 = 91,492.74 : x
  2. Step 2: Convert to fraction form
    291,160.17/436,736.21 = 91,492.74/x
  3. Step 3: Cross multiply
    291,160.17x = 436,736.21 × 91,492.74
  4. Step 4: Simplify right side
    291,160.17x = 39,958,192,052.65
  5. Step 5: Solve for x
    x = 39,958,192,052.65/291,160.17
  6. Step 6: Final answer
    x = 137,237.84

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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.