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Finding the Fourth Proportional to 303,546.40, 455,240.25 and 90,256.87

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Solution

The fourth proportional to 303,546.40, 455,240.25 and 90,256.87 is: 135,361.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,546.40 : 455,240.25 = 90,256.87 : x
  2. Step 2: Convert to fraction form
    303,546.40/455,240.25 = 90,256.87/x
  3. Step 3: Cross multiply
    303,546.40x = 455,240.25 × 90,256.87
  4. Step 4: Simplify right side
    303,546.40x = 41,088,557,335.53
  5. Step 5: Solve for x
    x = 41,088,557,335.53/303,546.40
  6. Step 6: Final answer
    x = 135,361.70

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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.