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Finding the Fourth Proportional to 225,606.80, 338,129.40 and 145,433.36

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Solution

The fourth proportional to 225,606.80, 338,129.40 and 145,433.36 is: 217,969.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,606.80 : 338,129.40 = 145,433.36 : x
  2. Step 2: Convert to fraction form
    225,606.80/338,129.40 = 145,433.36/x
  3. Step 3: Cross multiply
    225,606.80x = 338,129.40 × 145,433.36
  4. Step 4: Simplify right side
    225,606.80x = 49,175,294,756.78
  5. Step 5: Solve for x
    x = 49,175,294,756.78/225,606.80
  6. Step 6: Final answer
    x = 217,969.03

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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.