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Finding the Fourth Proportional to 368,998.20, 553,497.30 and 200,599.20

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Solution

The fourth proportional to 368,998.20, 553,497.30 and 200,599.20 is: 300,898.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,998.20 : 553,497.30 = 200,599.20 : x
  2. Step 2: Convert to fraction form
    368,998.20/553,497.30 = 200,599.20/x
  3. Step 3: Cross multiply
    368,998.20x = 553,497.30 × 200,599.20
  4. Step 4: Simplify right side
    368,998.20x = 111,031,115,582.16
  5. Step 5: Solve for x
    x = 111,031,115,582.16/368,998.20
  6. Step 6: Final answer
    x = 300,898.80

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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.