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Finding the Fourth Proportional to 285,957.41, 394,668.53 and 158,674.01

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Solution

The fourth proportional to 285,957.41, 394,668.53 and 158,674.01 is: 218,996.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,957.41 : 394,668.53 = 158,674.01 : x
  2. Step 2: Convert to fraction form
    285,957.41/394,668.53 = 158,674.01/x
  3. Step 3: Cross multiply
    285,957.41x = 394,668.53 × 158,674.01
  4. Step 4: Simplify right side
    285,957.41x = 62,623,638,672.59
  5. Step 5: Solve for x
    x = 62,623,638,672.59/285,957.41
  6. Step 6: Final answer
    x = 218,996.38

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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.