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Finding the Fourth Proportional to 200,200.36, 300,300.30 and 121,337.08

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Solution

The fourth proportional to 200,200.36, 300,300.30 and 121,337.08 is: 182,005.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,200.36 : 300,300.30 = 121,337.08 : x
  2. Step 2: Convert to fraction form
    200,200.36/300,300.30 = 121,337.08/x
  3. Step 3: Cross multiply
    200,200.36x = 300,300.30 × 121,337.08
  4. Step 4: Simplify right side
    200,200.36x = 36,437,561,525.12
  5. Step 5: Solve for x
    x = 36,437,561,525.12/200,200.36
  6. Step 6: Final answer
    x = 182,005.47

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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.