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Finding the Fourth Proportional to 303,356.80, 455,132.40 and 203,629.60

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Solution

The fourth proportional to 303,356.80, 455,132.40 and 203,629.60 is: 305,509.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,356.80 : 455,132.40 = 203,629.60 : x
  2. Step 2: Convert to fraction form
    303,356.80/455,132.40 = 203,629.60/x
  3. Step 3: Cross multiply
    303,356.80x = 455,132.40 × 203,629.60
  4. Step 4: Simplify right side
    303,356.80x = 92,678,428,559.04
  5. Step 5: Solve for x
    x = 92,678,428,559.04/303,356.80
  6. Step 6: Final answer
    x = 305,509.65

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1.5x scale

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.