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Finding the Fourth Proportional to 265,993.12, 399,136.56 and 108,332.56

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Solution

The fourth proportional to 265,993.12, 399,136.56 and 108,332.56 is: 162,558.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,993.12 : 399,136.56 = 108,332.56 : x
  2. Step 2: Convert to fraction form
    265,993.12/399,136.56 = 108,332.56/x
  3. Step 3: Cross multiply
    265,993.12x = 399,136.56 × 108,332.56
  4. Step 4: Simplify right side
    265,993.12x = 43,239,485,334.39
  5. Step 5: Solve for x
    x = 43,239,485,334.39/265,993.12
  6. Step 6: Final answer
    x = 162,558.66

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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.