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Finding the Fourth Proportional to 285,900.72, 394,543.25 and 158,576.31

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Solution

The fourth proportional to 285,900.72, 394,543.25 and 158,576.31 is: 218,835.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,900.72 : 394,543.25 = 158,576.31 : x
  2. Step 2: Convert to fraction form
    285,900.72/394,543.25 = 158,576.31/x
  3. Step 3: Cross multiply
    285,900.72x = 394,543.25 × 158,576.31
  4. Step 4: Simplify right side
    285,900.72x = 62,565,211,927.53
  5. Step 5: Solve for x
    x = 62,565,211,927.53/285,900.72
  6. Step 6: Final answer
    x = 218,835.45

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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.