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Finding the Fourth Proportional to 259,299.68, 388,945.64 and 158,127.45

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Solution

The fourth proportional to 259,299.68, 388,945.64 and 158,127.45 is: 237,188.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,299.68 : 388,945.64 = 158,127.45 : x
  2. Step 2: Convert to fraction form
    259,299.68/388,945.64 = 158,127.45/x
  3. Step 3: Cross multiply
    259,299.68x = 388,945.64 × 158,127.45
  4. Step 4: Simplify right side
    259,299.68x = 61,502,981,451.18
  5. Step 5: Solve for x
    x = 61,502,981,451.18/259,299.68
  6. Step 6: Final answer
    x = 237,188.81

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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.