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Finding the Fourth Proportional to 393,616.80, 590,425.20 and 360,957.60

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Solution

The fourth proportional to 393,616.80, 590,425.20 and 360,957.60 is: 541,436.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,616.80 : 590,425.20 = 360,957.60 : x
  2. Step 2: Convert to fraction form
    393,616.80/590,425.20 = 360,957.60/x
  3. Step 3: Cross multiply
    393,616.80x = 590,425.20 × 360,957.60
  4. Step 4: Simplify right side
    393,616.80x = 213,118,463,171.52
  5. Step 5: Solve for x
    x = 213,118,463,171.52/393,616.80
  6. Step 6: Final answer
    x = 541,436.40

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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.