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Finding the Fourth Proportional to 339,288.80, 508,609.20 and 125,999.60

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Solution

The fourth proportional to 339,288.80, 508,609.20 and 125,999.60 is: 188,879.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,288.80 : 508,609.20 = 125,999.60 : x
  2. Step 2: Convert to fraction form
    339,288.80/508,609.20 = 125,999.60/x
  3. Step 3: Cross multiply
    339,288.80x = 508,609.20 × 125,999.60
  4. Step 4: Simplify right side
    339,288.80x = 64,084,555,756.32
  5. Step 5: Solve for x
    x = 64,084,555,756.32/339,288.80
  6. Step 6: Final answer
    x = 188,879.08

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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.