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Finding the Fourth Proportional to 303,509.20, 455,263.80 and 161,791.60

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Solution

The fourth proportional to 303,509.20, 455,263.80 and 161,791.60 is: 242,687.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,509.20 : 455,263.80 = 161,791.60 : x
  2. Step 2: Convert to fraction form
    303,509.20/455,263.80 = 161,791.60/x
  3. Step 3: Cross multiply
    303,509.20x = 455,263.80 × 161,791.60
  4. Step 4: Simplify right side
    303,509.20x = 73,657,858,624.08
  5. Step 5: Solve for x
    x = 73,657,858,624.08/303,509.20
  6. Step 6: Final answer
    x = 242,687.40

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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.