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Finding the Fourth Proportional to 303,563.05, 455,303.01 and 90,363.87

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Solution

The fourth proportional to 303,563.05, 455,303.01 and 90,363.87 is: 135,533.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,563.05 : 455,303.01 = 90,363.87 : x
  2. Step 2: Convert to fraction form
    303,563.05/455,303.01 = 90,363.87/x
  3. Step 3: Cross multiply
    303,563.05x = 455,303.01 × 90,363.87
  4. Step 4: Simplify right side
    303,563.05x = 41,142,942,006.25
  5. Step 5: Solve for x
    x = 41,142,942,006.25/303,563.05
  6. Step 6: Final answer
    x = 135,533.43

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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.