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Finding the Fourth Proportional to 213,866.98, 295,103.40 and 123,205.21

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Solution

The fourth proportional to 213,866.98, 295,103.40 and 123,205.21 is: 170,004.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,866.98 : 295,103.40 = 123,205.21 : x
  2. Step 2: Convert to fraction form
    213,866.98/295,103.40 = 123,205.21/x
  3. Step 3: Cross multiply
    213,866.98x = 295,103.40 × 123,205.21
  4. Step 4: Simplify right side
    213,866.98x = 36,358,275,168.94
  5. Step 5: Solve for x
    x = 36,358,275,168.94/213,866.98
  6. Step 6: Final answer
    x = 170,004.16

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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.