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Finding the Fourth Proportional to 391,455.40, 587,183.10 and 233,602.60

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Solution

The fourth proportional to 391,455.40, 587,183.10 and 233,602.60 is: 350,403.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,455.40 : 587,183.10 = 233,602.60 : x
  2. Step 2: Convert to fraction form
    391,455.40/587,183.10 = 233,602.60/x
  3. Step 3: Cross multiply
    391,455.40x = 587,183.10 × 233,602.60
  4. Step 4: Simplify right side
    391,455.40x = 137,167,498,836.06
  5. Step 5: Solve for x
    x = 137,167,498,836.06/391,455.40
  6. Step 6: Final answer
    x = 350,403.90

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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.