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Finding the Fourth Proportional to 213,863.92, 295,205.99 and 123,256.08

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Solution

The fourth proportional to 213,863.92, 295,205.99 and 123,256.08 is: 170,135.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,863.92 : 295,205.99 = 123,256.08 : x
  2. Step 2: Convert to fraction form
    213,863.92/295,205.99 = 123,256.08/x
  3. Step 3: Cross multiply
    213,863.92x = 295,205.99 × 123,256.08
  4. Step 4: Simplify right side
    213,863.92x = 36,385,932,503.64
  5. Step 5: Solve for x
    x = 36,385,932,503.64/213,863.92
  6. Step 6: Final answer
    x = 170,135.91

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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.