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Finding the Fourth Proportional to 339,998.25, 509,994.34 and 126,758.92

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Solution

The fourth proportional to 339,998.25, 509,994.34 and 126,758.92 is: 190,137.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,998.25 : 509,994.34 = 126,758.92 : x
  2. Step 2: Convert to fraction form
    339,998.25/509,994.34 = 126,758.92/x
  3. Step 3: Cross multiply
    339,998.25x = 509,994.34 × 126,758.92
  4. Step 4: Simplify right side
    339,998.25x = 64,646,330,152.63
  5. Step 5: Solve for x
    x = 64,646,330,152.63/339,998.25
  6. Step 6: Final answer
    x = 190,137.24

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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.