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Finding the Fourth Proportional to 285,987.67, 394,710.20 and 158,704.27

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Solution

The fourth proportional to 285,987.67, 394,710.20 and 158,704.27 is: 219,038.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,987.67 : 394,710.20 = 158,704.27 : x
  2. Step 2: Convert to fraction form
    285,987.67/394,710.20 = 158,704.27/x
  3. Step 3: Cross multiply
    285,987.67x = 394,710.20 × 158,704.27
  4. Step 4: Simplify right side
    285,987.67x = 62,642,193,359.03
  5. Step 5: Solve for x
    x = 62,642,193,359.03/285,987.67
  6. Step 6: Final answer
    x = 219,038.09

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1.5x scale

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.