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Finding the Fourth Proportional to 351,299.87, 484,803.23 and 213,431.87

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Solution

The fourth proportional to 351,299.87, 484,803.23 and 213,431.87 is: 294,541.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,299.87 : 484,803.23 = 213,431.87 : x
  2. Step 2: Convert to fraction form
    351,299.87/484,803.23 = 213,431.87/x
  3. Step 3: Cross multiply
    351,299.87x = 484,803.23 × 213,431.87
  4. Step 4: Simplify right side
    351,299.87x = 103,472,458,893.78
  5. Step 5: Solve for x
    x = 103,472,458,893.78/351,299.87
  6. Step 6: Final answer
    x = 294,541.69

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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.