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Finding the Fourth Proportional to 245,261.48, 338,490.90 and 137,836.04

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Solution

The fourth proportional to 245,261.48, 338,490.90 and 137,836.04 is: 190,230.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,261.48 : 338,490.90 = 137,836.04 : x
  2. Step 2: Convert to fraction form
    245,261.48/338,490.90 = 137,836.04/x
  3. Step 3: Cross multiply
    245,261.48x = 338,490.90 × 137,836.04
  4. Step 4: Simplify right side
    245,261.48x = 46,656,245,232.04
  5. Step 5: Solve for x
    x = 46,656,245,232.04/245,261.48
  6. Step 6: Final answer
    x = 190,230.63

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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.