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Finding the Fourth Proportional to 405,745.45, 560,152.21 and 303,734.21

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Solution

The fourth proportional to 405,745.45, 560,152.21 and 303,734.21 is: 419,320.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,745.45 : 560,152.21 = 303,734.21 : x
  2. Step 2: Convert to fraction form
    405,745.45/560,152.21 = 303,734.21/x
  3. Step 3: Cross multiply
    405,745.45x = 560,152.21 × 303,734.21
  4. Step 4: Simplify right side
    405,745.45x = 170,137,385,993.51
  5. Step 5: Solve for x
    x = 170,137,385,993.51/405,745.45
  6. Step 6: Final answer
    x = 419,320.50

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1.5x scale

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.