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Finding the Fourth Proportional to 303,319.64, 455,033.46 and 103,662.20

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Solution

The fourth proportional to 303,319.64, 455,033.46 and 103,662.20 is: 155,511.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,319.64 : 455,033.46 = 103,662.20 : x
  2. Step 2: Convert to fraction form
    303,319.64/455,033.46 = 103,662.20/x
  3. Step 3: Cross multiply
    303,319.64x = 455,033.46 × 103,662.20
  4. Step 4: Simplify right side
    303,319.64x = 47,169,769,537.21
  5. Step 5: Solve for x
    x = 47,169,769,537.21/303,319.64
  6. Step 6: Final answer
    x = 155,511.75

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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.