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Finding the Fourth Proportional to 425,947.14, 638,936.91 and 110,404.98

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Solution

The fourth proportional to 425,947.14, 638,936.91 and 110,404.98 is: 165,611.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,947.14 : 638,936.91 = 110,404.98 : x
  2. Step 2: Convert to fraction form
    425,947.14/638,936.91 = 110,404.98/x
  3. Step 3: Cross multiply
    425,947.14x = 638,936.91 × 110,404.98
  4. Step 4: Simplify right side
    425,947.14x = 70,541,816,769.81
  5. Step 5: Solve for x
    x = 70,541,816,769.81/425,947.14
  6. Step 6: Final answer
    x = 165,611.67

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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.