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Finding the Fourth Proportional to 245,368.67, 338,598.90 and 137,936.42

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Solution

The fourth proportional to 245,368.67, 338,598.90 and 137,936.42 is: 190,346.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,368.67 : 338,598.90 = 137,936.42 : x
  2. Step 2: Convert to fraction form
    245,368.67/338,598.90 = 137,936.42/x
  3. Step 3: Cross multiply
    245,368.67x = 338,598.90 × 137,936.42
  4. Step 4: Simplify right side
    245,368.67x = 46,705,118,388.94
  5. Step 5: Solve for x
    x = 46,705,118,388.94/245,368.67
  6. Step 6: Final answer
    x = 190,346.71

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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.