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Finding the Fourth Proportional to 303,546.68, 455,240.70 and 90,257.16

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Solution

The fourth proportional to 303,546.68, 455,240.70 and 90,257.16 is: 135,362.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,546.68 : 455,240.70 = 90,257.16 : x
  2. Step 2: Convert to fraction form
    303,546.68/455,240.70 = 90,257.16/x
  3. Step 3: Cross multiply
    303,546.68x = 455,240.70 × 90,257.16
  4. Step 4: Simplify right side
    303,546.68x = 41,088,732,698.41
  5. Step 5: Solve for x
    x = 41,088,732,698.41/303,546.68
  6. Step 6: Final answer
    x = 135,362.16

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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.