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Finding the Fourth Proportional to 388,514.68, 582,772.02 and 188,663.79

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Solution

The fourth proportional to 388,514.68, 582,772.02 and 188,663.79 is: 282,995.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,514.68 : 582,772.02 = 188,663.79 : x
  2. Step 2: Convert to fraction form
    388,514.68/582,772.02 = 188,663.79/x
  3. Step 3: Cross multiply
    388,514.68x = 582,772.02 × 188,663.79
  4. Step 4: Simplify right side
    388,514.68x = 109,947,977,999.16
  5. Step 5: Solve for x
    x = 109,947,977,999.16/388,514.68
  6. Step 6: Final answer
    x = 282,995.69

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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.