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Finding the Fourth Proportional to 393,203.20, 589,027.20 and 365,209.60

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Solution

The fourth proportional to 393,203.20, 589,027.20 and 365,209.60 is: 547,092.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,203.20 : 589,027.20 = 365,209.60 : x
  2. Step 2: Convert to fraction form
    393,203.20/589,027.20 = 365,209.60/x
  3. Step 3: Cross multiply
    393,203.20x = 589,027.20 × 365,209.60
  4. Step 4: Simplify right side
    393,203.20x = 215,118,388,101.12
  5. Step 5: Solve for x
    x = 215,118,388,101.12/393,203.20
  6. Step 6: Final answer
    x = 547,092.16

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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.