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Finding the Fourth Proportional to 303,146.96, 455,716.94 and 281,225.12

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Solution

The fourth proportional to 303,146.96, 455,716.94 and 281,225.12 is: 422,762.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,146.96 : 455,716.94 = 281,225.12 : x
  2. Step 2: Convert to fraction form
    303,146.96/455,716.94 = 281,225.12/x
  3. Step 3: Cross multiply
    303,146.96x = 455,716.94 × 281,225.12
  4. Step 4: Simplify right side
    303,146.96x = 128,159,047,452.82
  5. Step 5: Solve for x
    x = 128,159,047,452.82/303,146.96
  6. Step 6: Final answer
    x = 422,762.11

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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.