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Finding the Fourth Proportional to 483,438.80, 724,380.60 and 305,627.60

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Solution

The fourth proportional to 483,438.80, 724,380.60 and 305,627.60 is: 457,949.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,438.80 : 724,380.60 = 305,627.60 : x
  2. Step 2: Convert to fraction form
    483,438.80/724,380.60 = 305,627.60/x
  3. Step 3: Cross multiply
    483,438.80x = 724,380.60 × 305,627.60
  4. Step 4: Simplify right side
    483,438.80x = 221,390,704,264.56
  5. Step 5: Solve for x
    x = 221,390,704,264.56/483,438.80
  6. Step 6: Final answer
    x = 457,949.81

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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.