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Finding the Fourth Proportional to 200,998.80, 301,498.20 and 126,203.40

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Solution

The fourth proportional to 200,998.80, 301,498.20 and 126,203.40 is: 189,305.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,998.80 : 301,498.20 = 126,203.40 : x
  2. Step 2: Convert to fraction form
    200,998.80/301,498.20 = 126,203.40/x
  3. Step 3: Cross multiply
    200,998.80x = 301,498.20 × 126,203.40
  4. Step 4: Simplify right side
    200,998.80x = 38,050,097,933.88
  5. Step 5: Solve for x
    x = 38,050,097,933.88/200,998.80
  6. Step 6: Final answer
    x = 189,305.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.