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Finding the Fourth Proportional to 620,481.72, 930,611.70 and 165,075.42

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Solution

The fourth proportional to 620,481.72, 930,611.70 and 165,075.42 is: 247,583.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,481.72 : 930,611.70 = 165,075.42 : x
  2. Step 2: Convert to fraction form
    620,481.72/930,611.70 = 165,075.42/x
  3. Step 3: Cross multiply
    620,481.72x = 930,611.70 × 165,075.42
  4. Step 4: Simplify right side
    620,481.72x = 153,621,117,234.41
  5. Step 5: Solve for x
    x = 153,621,117,234.41/620,481.72
  6. Step 6: Final answer
    x = 247,583.63

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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.