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Finding the Fourth Proportional to 303,921.60, 455,882.40 and 135,522.60

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Solution

The fourth proportional to 303,921.60, 455,882.40 and 135,522.60 is: 203,283.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,921.60 : 455,882.40 = 135,522.60 : x
  2. Step 2: Convert to fraction form
    303,921.60/455,882.40 = 135,522.60/x
  3. Step 3: Cross multiply
    303,921.60x = 455,882.40 × 135,522.60
  4. Step 4: Simplify right side
    303,921.60x = 61,782,368,142.24
  5. Step 5: Solve for x
    x = 61,782,368,142.24/303,921.60
  6. Step 6: Final answer
    x = 203,283.90

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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.