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Finding the Fourth Proportional to 355,959.74, 534,150.09 and 131,478.77

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Solution

The fourth proportional to 355,959.74, 534,150.09 and 131,478.77 is: 197,295.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,959.74 : 534,150.09 = 131,478.77 : x
  2. Step 2: Convert to fraction form
    355,959.74/534,150.09 = 131,478.77/x
  3. Step 3: Cross multiply
    355,959.74x = 534,150.09 × 131,478.77
  4. Step 4: Simplify right side
    355,959.74x = 70,229,394,157.84
  5. Step 5: Solve for x
    x = 70,229,394,157.84/355,959.74
  6. Step 6: Final answer
    x = 197,295.89

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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.