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Finding the Fourth Proportional to 449,322.41, 673,650.70 and 212,388.23

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Solution

The fourth proportional to 449,322.41, 673,650.70 and 212,388.23 is: 318,424.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,322.41 : 673,650.70 = 212,388.23 : x
  2. Step 2: Convert to fraction form
    449,322.41/673,650.70 = 212,388.23/x
  3. Step 3: Cross multiply
    449,322.41x = 673,650.70 × 212,388.23
  4. Step 4: Simplify right side
    449,322.41x = 143,075,479,811.26
  5. Step 5: Solve for x
    x = 143,075,479,811.26/449,322.41
  6. Step 6: Final answer
    x = 318,424.98

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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.