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Finding the Fourth Proportional to 303,546.65, 455,240.62 and 90,257.12

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Solution

The fourth proportional to 303,546.65, 455,240.62 and 90,257.12 is: 135,362.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,546.65 : 455,240.62 = 90,257.12 : x
  2. Step 2: Convert to fraction form
    303,546.65/455,240.62 = 90,257.12/x
  3. Step 3: Cross multiply
    303,546.65x = 455,240.62 × 90,257.12
  4. Step 4: Simplify right side
    303,546.65x = 41,088,704,992.01
  5. Step 5: Solve for x
    x = 41,088,704,992.01/303,546.65
  6. Step 6: Final answer
    x = 135,362.08

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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.