Home / 245,647.35-338,999.96-138,221.19

Finding the Fourth Proportional to 245,647.35, 338,999.96 and 138,221.19

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Solution

The fourth proportional to 245,647.35, 338,999.96 and 138,221.19 is: 190,748.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,647.35 : 338,999.96 = 138,221.19 : x
  2. Step 2: Convert to fraction form
    245,647.35/338,999.96 = 138,221.19/x
  3. Step 3: Cross multiply
    245,647.35x = 338,999.96 × 138,221.19
  4. Step 4: Simplify right side
    245,647.35x = 46,856,978,226.71
  5. Step 5: Solve for x
    x = 46,856,978,226.71/245,647.35
  6. Step 6: Final answer
    x = 190,748.97

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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.