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Finding the Fourth Proportional to 309,235.64, 427,005.24 and 232,621.94

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Solution

The fourth proportional to 309,235.64, 427,005.24 and 232,621.94 is: 321,213.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,235.64 : 427,005.24 = 232,621.94 : x
  2. Step 2: Convert to fraction form
    309,235.64/427,005.24 = 232,621.94/x
  3. Step 3: Cross multiply
    309,235.64x = 427,005.24 × 232,621.94
  4. Step 4: Simplify right side
    309,235.64x = 99,330,787,318.97
  5. Step 5: Solve for x
    x = 99,330,787,318.97/309,235.64
  6. Step 6: Final answer
    x = 321,213.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.