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Finding the Fourth Proportional to 819,234.40, 1,229,024.40 and 258,325.60

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Solution

The fourth proportional to 819,234.40, 1,229,024.40 and 258,325.60 is: 387,542.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,234.40 : 1,229,024.40 = 258,325.60 : x
  2. Step 2: Convert to fraction form
    819,234.40/1,229,024.40 = 258,325.60/x
  3. Step 3: Cross multiply
    819,234.40x = 1,229,024.40 × 258,325.60
  4. Step 4: Simplify right side
    819,234.40x = 317,488,465,544.64
  5. Step 5: Solve for x
    x = 317,488,465,544.64/819,234.40
  6. Step 6: Final answer
    x = 387,542.89

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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.