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Finding the Fourth Proportional to 239,663.45, 330,855.40 and 149,048.60

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Solution

The fourth proportional to 239,663.45, 330,855.40 and 149,048.60 is: 205,761.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,663.45 : 330,855.40 = 149,048.60 : x
  2. Step 2: Convert to fraction form
    239,663.45/330,855.40 = 149,048.60/x
  3. Step 3: Cross multiply
    239,663.45x = 330,855.40 × 149,048.60
  4. Step 4: Simplify right side
    239,663.45x = 49,313,535,185.89
  5. Step 5: Solve for x
    x = 49,313,535,185.89/239,663.45
  6. Step 6: Final answer
    x = 205,761.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.