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Finding the Fourth Proportional to 291,697.88, 437,546.81 and 70,081.88

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Solution

The fourth proportional to 291,697.88, 437,546.81 and 70,081.88 is: 105,122.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,697.88 : 437,546.81 = 70,081.88 : x
  2. Step 2: Convert to fraction form
    291,697.88/437,546.81 = 70,081.88/x
  3. Step 3: Cross multiply
    291,697.88x = 437,546.81 × 70,081.88
  4. Step 4: Simplify right side
    291,697.88x = 30,664,101,020.27
  5. Step 5: Solve for x
    x = 30,664,101,020.27/291,697.88
  6. Step 6: Final answer
    x = 105,122.81

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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.