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Finding the Fourth Proportional to 213,490.80, 294,600.60 and 122,851.80

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Solution

The fourth proportional to 213,490.80, 294,600.60 and 122,851.80 is: 169,525.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,490.80 : 294,600.60 = 122,851.80 : x
  2. Step 2: Convert to fraction form
    213,490.80/294,600.60 = 122,851.80/x
  3. Step 3: Cross multiply
    213,490.80x = 294,600.60 × 122,851.80
  4. Step 4: Simplify right side
    213,490.80x = 36,192,213,991.08
  5. Step 5: Solve for x
    x = 36,192,213,991.08/213,490.80
  6. Step 6: Final answer
    x = 169,525.87

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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.