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Finding the Fourth Proportional to 285,563.84, 394,071.84 and 158,239.04

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Solution

The fourth proportional to 285,563.84, 394,071.84 and 158,239.04 is: 218,366.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,563.84 : 394,071.84 = 158,239.04 : x
  2. Step 2: Convert to fraction form
    285,563.84/394,071.84 = 158,239.04/x
  3. Step 3: Cross multiply
    285,563.84x = 394,071.84 × 158,239.04
  4. Step 4: Simplify right side
    285,563.84x = 62,357,549,652.63
  5. Step 5: Solve for x
    x = 62,357,549,652.63/285,563.84
  6. Step 6: Final answer
    x = 218,366.41

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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.