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Finding the Fourth Proportional to 339,908.30, 509,538.45 and 126,619.10

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Solution

The fourth proportional to 339,908.30, 509,538.45 and 126,619.10 is: 189,807.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,908.30 : 509,538.45 = 126,619.10 : x
  2. Step 2: Convert to fraction form
    339,908.30/509,538.45 = 126,619.10/x
  3. Step 3: Cross multiply
    339,908.30x = 509,538.45 × 126,619.10
  4. Step 4: Simplify right side
    339,908.30x = 64,517,299,954.40
  5. Step 5: Solve for x
    x = 64,517,299,954.40/339,908.30
  6. Step 6: Final answer
    x = 189,807.96

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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.