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Finding the Fourth Proportional to 245,596.54, 338,942.88 and 138,160.18

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Solution

The fourth proportional to 245,596.54, 338,942.88 and 138,160.18 is: 190,672.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,596.54 : 338,942.88 = 138,160.18 : x
  2. Step 2: Convert to fraction form
    245,596.54/338,942.88 = 138,160.18/x
  3. Step 3: Cross multiply
    245,596.54x = 338,942.88 × 138,160.18
  4. Step 4: Simplify right side
    245,596.54x = 46,828,409,310.52
  5. Step 5: Solve for x
    x = 46,828,409,310.52/245,596.54
  6. Step 6: Final answer
    x = 190,672.11

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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.