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Finding the Fourth Proportional to 450,400.80, 621,491.90 and 269,074.35

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Solution

The fourth proportional to 450,400.80, 621,491.90 and 269,074.35 is: 371,286.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,400.80 : 621,491.90 = 269,074.35 : x
  2. Step 2: Convert to fraction form
    450,400.80/621,491.90 = 269,074.35/x
  3. Step 3: Cross multiply
    450,400.80x = 621,491.90 × 269,074.35
  4. Step 4: Simplify right side
    450,400.80x = 167,227,524,569.93
  5. Step 5: Solve for x
    x = 167,227,524,569.93/450,400.80
  6. Step 6: Final answer
    x = 371,286.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.