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Finding the Fourth Proportional to 245,111.82, 338,201.84 and 143,091

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Solution

The fourth proportional to 245,111.82, 338,201.84 and 143,091 is: 197,434.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,111.82 : 338,201.84 = 143,091 : x
  2. Step 2: Convert to fraction form
    245,111.82/338,201.84 = 143,091/x
  3. Step 3: Cross multiply
    245,111.82x = 338,201.84 × 143,091
  4. Step 4: Simplify right side
    245,111.82x = 48,393,639,487.44
  5. Step 5: Solve for x
    x = 48,393,639,487.44/245,111.82
  6. Step 6: Final answer
    x = 197,434.95

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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.