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Finding the Fourth Proportional to 204,998.40, 307,497.60 and 72,028.80

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Solution

The fourth proportional to 204,998.40, 307,497.60 and 72,028.80 is: 108,043.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,998.40 : 307,497.60 = 72,028.80 : x
  2. Step 2: Convert to fraction form
    204,998.40/307,497.60 = 72,028.80/x
  3. Step 3: Cross multiply
    204,998.40x = 307,497.60 × 72,028.80
  4. Step 4: Simplify right side
    204,998.40x = 22,148,683,130.88
  5. Step 5: Solve for x
    x = 22,148,683,130.88/204,998.40
  6. Step 6: Final answer
    x = 108,043.20

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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.