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Finding the Fourth Proportional to 344,879.78, 517,313.67 and 155,205.92

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Solution

The fourth proportional to 344,879.78, 517,313.67 and 155,205.92 is: 232,806.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    344,879.78 : 517,313.67 = 155,205.92 : x
  2. Step 2: Convert to fraction form
    344,879.78/517,313.67 = 155,205.92/x
  3. Step 3: Cross multiply
    344,879.78x = 517,313.67 × 155,205.92
  4. Step 4: Simplify right side
    344,879.78x = 80,290,141,494.36
  5. Step 5: Solve for x
    x = 80,290,141,494.36/344,879.78
  6. Step 6: Final answer
    x = 232,806.18

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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.