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Finding the Fourth Proportional to 339,651.77, 509,712.84 and 126,614.25

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Solution

The fourth proportional to 339,651.77, 509,712.84 and 126,614.25 is: 190,009.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,651.77 : 509,712.84 = 126,614.25 : x
  2. Step 2: Convert to fraction form
    339,651.77/509,712.84 = 126,614.25/x
  3. Step 3: Cross multiply
    339,651.77x = 509,712.84 × 126,614.25
  4. Step 4: Simplify right side
    339,651.77x = 64,536,908,951.97
  5. Step 5: Solve for x
    x = 64,536,908,951.97/339,651.77
  6. Step 6: Final answer
    x = 190,009.05

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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.