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Finding the Fourth Proportional to 291,339.16, 436,645.74 and 104,144.92

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Solution

The fourth proportional to 291,339.16, 436,645.74 and 104,144.92 is: 156,087.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,339.16 : 436,645.74 = 104,144.92 : x
  2. Step 2: Convert to fraction form
    291,339.16/436,645.74 = 104,144.92/x
  3. Step 3: Cross multiply
    291,339.16x = 436,645.74 × 104,144.92
  4. Step 4: Simplify right side
    291,339.16x = 45,474,435,660.64
  5. Step 5: Solve for x
    x = 45,474,435,660.64/291,339.16
  6. Step 6: Final answer
    x = 156,087.62

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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.