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Finding the Fourth Proportional to 207,424.20, 286,205.22 and 122,555.64

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Solution

The fourth proportional to 207,424.20, 286,205.22 and 122,555.64 is: 169,103.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,424.20 : 286,205.22 = 122,555.64 : x
  2. Step 2: Convert to fraction form
    207,424.20/286,205.22 = 122,555.64/x
  3. Step 3: Cross multiply
    207,424.20x = 286,205.22 × 122,555.64
  4. Step 4: Simplify right side
    207,424.20x = 35,076,063,908.44
  5. Step 5: Solve for x
    x = 35,076,063,908.44/207,424.20
  6. Step 6: Final answer
    x = 169,103.05

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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.