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Finding the Fourth Proportional to 239,393.44, 330,379.86 and 137,435.50

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Solution

The fourth proportional to 239,393.44, 330,379.86 and 137,435.50 is: 189,670.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,393.44 : 330,379.86 = 137,435.50 : x
  2. Step 2: Convert to fraction form
    239,393.44/330,379.86 = 137,435.50/x
  3. Step 3: Cross multiply
    239,393.44x = 330,379.86 × 137,435.50
  4. Step 4: Simplify right side
    239,393.44x = 45,405,921,249.03
  5. Step 5: Solve for x
    x = 45,405,921,249.03/239,393.44
  6. Step 6: Final answer
    x = 189,670.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.