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Finding the Fourth Proportional to 245,220.44, 338,434.43 and 137,788.13

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Solution

The fourth proportional to 245,220.44, 338,434.43 and 137,788.13 is: 190,164.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,220.44 : 338,434.43 = 137,788.13 : x
  2. Step 2: Convert to fraction form
    245,220.44/338,434.43 = 137,788.13/x
  3. Step 3: Cross multiply
    245,220.44x = 338,434.43 × 137,788.13
  4. Step 4: Simplify right side
    245,220.44x = 46,632,244,856.20
  5. Step 5: Solve for x
    x = 46,632,244,856.20/245,220.44
  6. Step 6: Final answer
    x = 190,164.60

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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.