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Finding the Fourth Proportional to 616,081.20, 923,992.20 and 261,106.80

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Solution

The fourth proportional to 616,081.20, 923,992.20 and 261,106.80 is: 391,605.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,081.20 : 923,992.20 = 261,106.80 : x
  2. Step 2: Convert to fraction form
    616,081.20/923,992.20 = 261,106.80/x
  3. Step 3: Cross multiply
    616,081.20x = 923,992.20 × 261,106.80
  4. Step 4: Simplify right side
    616,081.20x = 241,260,646,566.96
  5. Step 5: Solve for x
    x = 241,260,646,566.96/616,081.20
  6. Step 6: Final answer
    x = 391,605.27

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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.