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Finding the Fourth Proportional to 258,754.87, 388,001.01 and 118,393.21

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Solution

The fourth proportional to 258,754.87, 388,001.01 and 118,393.21 is: 177,529.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,754.87 : 388,001.01 = 118,393.21 : x
  2. Step 2: Convert to fraction form
    258,754.87/388,001.01 = 118,393.21/x
  3. Step 3: Cross multiply
    258,754.87x = 388,001.01 × 118,393.21
  4. Step 4: Simplify right side
    258,754.87x = 45,936,685,057.14
  5. Step 5: Solve for x
    x = 45,936,685,057.14/258,754.87
  6. Step 6: Final answer
    x = 177,529.74

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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.