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Finding the Fourth Proportional to 339,373.38, 509,274.64 and 189,711.90

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Solution

The fourth proportional to 339,373.38, 509,274.64 and 189,711.90 is: 284,687.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,373.38 : 509,274.64 = 189,711.90 : x
  2. Step 2: Convert to fraction form
    339,373.38/509,274.64 = 189,711.90/x
  3. Step 3: Cross multiply
    339,373.38x = 509,274.64 × 189,711.90
  4. Step 4: Simplify right side
    339,373.38x = 96,615,459,576.22
  5. Step 5: Solve for x
    x = 96,615,459,576.22/339,373.38
  6. Step 6: Final answer
    x = 284,687.80

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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.