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Finding the Fourth Proportional to 339,508.51, 509,263.88 and 126,323.39

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Solution

The fourth proportional to 339,508.51, 509,263.88 and 126,323.39 is: 189,485.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,508.51 : 509,263.88 = 126,323.39 : x
  2. Step 2: Convert to fraction form
    339,508.51/509,263.88 = 126,323.39/x
  3. Step 3: Cross multiply
    339,508.51x = 509,263.88 × 126,323.39
  4. Step 4: Simplify right side
    339,508.51x = 64,331,940,367.70
  5. Step 5: Solve for x
    x = 64,331,940,367.70/339,508.51
  6. Step 6: Final answer
    x = 189,485.50

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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.