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Finding the Fourth Proportional to 344,639.88, 516,431.70 and 231,903

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Solution

The fourth proportional to 344,639.88, 516,431.70 and 231,903 is: 347,499.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    344,639.88 : 516,431.70 = 231,903 : x
  2. Step 2: Convert to fraction form
    344,639.88/516,431.70 = 231,903/x
  3. Step 3: Cross multiply
    344,639.88x = 516,431.70 × 231,903
  4. Step 4: Simplify right side
    344,639.88x = 119,762,060,525.10
  5. Step 5: Solve for x
    x = 119,762,060,525.10/344,639.88
  6. Step 6: Final answer
    x = 347,499.14

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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.