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Finding the Fourth Proportional to 339,998.50, 509,994.71 and 126,759.17

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Solution

The fourth proportional to 339,998.50, 509,994.71 and 126,759.17 is: 190,137.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,998.50 : 509,994.71 = 126,759.17 : x
  2. Step 2: Convert to fraction form
    339,998.50/509,994.71 = 126,759.17/x
  3. Step 3: Cross multiply
    339,998.50x = 509,994.71 × 126,759.17
  4. Step 4: Simplify right side
    339,998.50x = 64,646,503,594.02
  5. Step 5: Solve for x
    x = 64,646,503,594.02/339,998.50
  6. Step 6: Final answer
    x = 190,137.61

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1.5x scale

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.