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Finding the Fourth Proportional to 285,599.88, 394,117.92 and 158,287.32

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Solution

The fourth proportional to 285,599.88, 394,117.92 and 158,287.32 is: 218,431.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,599.88 : 394,117.92 = 158,287.32 : x
  2. Step 2: Convert to fraction form
    285,599.88/394,117.92 = 158,287.32/x
  3. Step 3: Cross multiply
    285,599.88x = 394,117.92 × 158,287.32
  4. Step 4: Simplify right side
    285,599.88x = 62,383,869,320.77
  5. Step 5: Solve for x
    x = 62,383,869,320.77/285,599.88
  6. Step 6: Final answer
    x = 218,431.01

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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.