Home / 231,930.36-320,054.94-131,328.60

Finding the Fourth Proportional to 231,930.36, 320,054.94 and 131,328.60

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Solution

The fourth proportional to 231,930.36, 320,054.94 and 131,328.60 is: 181,228.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,930.36 : 320,054.94 = 131,328.60 : x
  2. Step 2: Convert to fraction form
    231,930.36/320,054.94 = 131,328.60/x
  3. Step 3: Cross multiply
    231,930.36x = 320,054.94 × 131,328.60
  4. Step 4: Simplify right side
    231,930.36x = 42,032,367,193.28
  5. Step 5: Solve for x
    x = 42,032,367,193.28/231,930.36
  6. Step 6: Final answer
    x = 181,228.40

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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.