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Finding the Fourth Proportional to 321,359.76, 481,928.54 and 131,766.30

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Solution

The fourth proportional to 321,359.76, 481,928.54 and 131,766.30 is: 197,603.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,359.76 : 481,928.54 = 131,766.30 : x
  2. Step 2: Convert to fraction form
    321,359.76/481,928.54 = 131,766.30/x
  3. Step 3: Cross multiply
    321,359.76x = 481,928.54 × 131,766.30
  4. Step 4: Simplify right side
    321,359.76x = 63,501,939,921.37
  5. Step 5: Solve for x
    x = 63,501,939,921.37/321,359.76
  6. Step 6: Final answer
    x = 197,603.89

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1.5x scale

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.