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Finding the Fourth Proportional to 303,336.40, 455,004.60 and 90,103.90

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Solution

The fourth proportional to 303,336.40, 455,004.60 and 90,103.90 is: 135,155.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,336.40 : 455,004.60 = 90,103.90 : x
  2. Step 2: Convert to fraction form
    303,336.40/455,004.60 = 90,103.90/x
  3. Step 3: Cross multiply
    303,336.40x = 455,004.60 × 90,103.90
  4. Step 4: Simplify right side
    303,336.40x = 40,997,688,977.94
  5. Step 5: Solve for x
    x = 40,997,688,977.94/303,336.40
  6. Step 6: Final answer
    x = 135,155.85

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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.