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Finding the Fourth Proportional to 332,238.40, 498,530.40 and 145,268.80

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Solution

The fourth proportional to 332,238.40, 498,530.40 and 145,268.80 is: 217,978.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    332,238.40 : 498,530.40 = 145,268.80 : x
  2. Step 2: Convert to fraction form
    332,238.40/498,530.40 = 145,268.80/x
  3. Step 3: Cross multiply
    332,238.40x = 498,530.40 × 145,268.80
  4. Step 4: Simplify right side
    332,238.40x = 72,420,912,971.52
  5. Step 5: Solve for x
    x = 72,420,912,971.52/332,238.40
  6. Step 6: Final answer
    x = 217,978.76

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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.