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Finding the Fourth Proportional to 303,505.58, 455,172.27 and 90,264.89

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Solution

The fourth proportional to 303,505.58, 455,172.27 and 90,264.89 is: 135,371.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,505.58 : 455,172.27 = 90,264.89 : x
  2. Step 2: Convert to fraction form
    303,505.58/455,172.27 = 90,264.89/x
  3. Step 3: Cross multiply
    303,505.58x = 455,172.27 × 90,264.89
  4. Step 4: Simplify right side
    303,505.58x = 41,086,074,882.60
  5. Step 5: Solve for x
    x = 41,086,074,882.60/303,505.58
  6. Step 6: Final answer
    x = 135,371.73

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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.