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Finding the Fourth Proportional to 200,745.20, 301,117.80 and 121,883.60

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Solution

The fourth proportional to 200,745.20, 301,117.80 and 121,883.60 is: 182,825.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,745.20 : 301,117.80 = 121,883.60 : x
  2. Step 2: Convert to fraction form
    200,745.20/301,117.80 = 121,883.60/x
  3. Step 3: Cross multiply
    200,745.20x = 301,117.80 × 121,883.60
  4. Step 4: Simplify right side
    200,745.20x = 36,701,321,488.08
  5. Step 5: Solve for x
    x = 36,701,321,488.08/200,745.20
  6. Step 6: Final answer
    x = 182,825.40

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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.