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Finding the Fourth Proportional to 388,554.41, 582,864.42 and 108,071.66

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Solution

The fourth proportional to 388,554.41, 582,864.42 and 108,071.66 is: 162,116.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,554.41 : 582,864.42 = 108,071.66 : x
  2. Step 2: Convert to fraction form
    388,554.41/582,864.42 = 108,071.66/x
  3. Step 3: Cross multiply
    388,554.41x = 582,864.42 × 108,071.66
  4. Step 4: Simplify right side
    388,554.41x = 62,991,125,424.34
  5. Step 5: Solve for x
    x = 62,991,125,424.34/388,554.41
  6. Step 6: Final answer
    x = 162,116.61

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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.