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Finding the Fourth Proportional to 200,727.20, 301,090.80 and 121,865.60

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Solution

The fourth proportional to 200,727.20, 301,090.80 and 121,865.60 is: 182,798.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,727.20 : 301,090.80 = 121,865.60 : x
  2. Step 2: Convert to fraction form
    200,727.20/301,090.80 = 121,865.60/x
  3. Step 3: Cross multiply
    200,727.20x = 301,090.80 × 121,865.60
  4. Step 4: Simplify right side
    200,727.20x = 36,692,610,996.48
  5. Step 5: Solve for x
    x = 36,692,610,996.48/200,727.20
  6. Step 6: Final answer
    x = 182,798.40

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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.