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Finding the Fourth Proportional to 285,967.04, 394,634.98 and 158,642.64

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Solution

The fourth proportional to 285,967.04, 394,634.98 and 158,642.64 is: 218,927.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,967.04 : 394,634.98 = 158,642.64 : x
  2. Step 2: Convert to fraction form
    285,967.04/394,634.98 = 158,642.64/x
  3. Step 3: Cross multiply
    285,967.04x = 394,634.98 × 158,642.64
  4. Step 4: Simplify right side
    285,967.04x = 62,605,933,090.37
  5. Step 5: Solve for x
    x = 62,605,933,090.37/285,967.04
  6. Step 6: Final answer
    x = 218,927.09

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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.