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Finding the Fourth Proportional to 245,171.97, 338,371.43 and 137,750.31

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Solution

The fourth proportional to 245,171.97, 338,371.43 and 137,750.31 is: 190,114.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,171.97 : 338,371.43 = 137,750.31 : x
  2. Step 2: Convert to fraction form
    245,171.97/338,371.43 = 137,750.31/x
  3. Step 3: Cross multiply
    245,171.97x = 338,371.43 × 137,750.31
  4. Step 4: Simplify right side
    245,171.97x = 46,610,768,688.89
  5. Step 5: Solve for x
    x = 46,610,768,688.89/245,171.97
  6. Step 6: Final answer
    x = 190,114.59

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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.