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Finding the Fourth Proportional to 285,969.04, 394,637.74 and 158,644.64

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Solution

The fourth proportional to 285,969.04, 394,637.74 and 158,644.64 is: 218,929.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,969.04 : 394,637.74 = 158,644.64 : x
  2. Step 2: Convert to fraction form
    285,969.04/394,637.74 = 158,644.64/x
  3. Step 3: Cross multiply
    285,969.04x = 394,637.74 × 158,644.64
  4. Step 4: Simplify right side
    285,969.04x = 62,607,162,192.71
  5. Step 5: Solve for x
    x = 62,607,162,192.71/285,969.04
  6. Step 6: Final answer
    x = 218,929.86

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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.