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Finding the Fourth Proportional to 245,515.54, 338,787.52 and 138,083.32

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Solution

The fourth proportional to 245,515.54, 338,787.52 and 138,083.32 is: 190,541.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,515.54 : 338,787.52 = 138,083.32 : x
  2. Step 2: Convert to fraction form
    245,515.54/338,787.52 = 138,083.32/x
  3. Step 3: Cross multiply
    245,515.54x = 338,787.52 × 138,083.32
  4. Step 4: Simplify right side
    245,515.54x = 46,780,905,536.17
  5. Step 5: Solve for x
    x = 46,780,905,536.17/245,515.54
  6. Step 6: Final answer
    x = 190,541.53

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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.