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Finding the Fourth Proportional to 617,703.20, 926,468.40 and 197,021.60

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Solution

The fourth proportional to 617,703.20, 926,468.40 and 197,021.60 is: 295,504.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,703.20 : 926,468.40 = 197,021.60 : x
  2. Step 2: Convert to fraction form
    617,703.20/926,468.40 = 197,021.60/x
  3. Step 3: Cross multiply
    617,703.20x = 926,468.40 × 197,021.60
  4. Step 4: Simplify right side
    617,703.20x = 182,534,286,517.44
  5. Step 5: Solve for x
    x = 182,534,286,517.44/617,703.20
  6. Step 6: Final answer
    x = 295,504.84

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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.