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Finding the Fourth Proportional to 285,447.82, 393,942 and 158,135.26

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Solution

The fourth proportional to 285,447.82, 393,942 and 158,135.26 is: 218,239.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,447.82 : 393,942 = 158,135.26 : x
  2. Step 2: Convert to fraction form
    285,447.82/393,942 = 158,135.26/x
  3. Step 3: Cross multiply
    285,447.82x = 393,942 × 158,135.26
  4. Step 4: Simplify right side
    285,447.82x = 62,296,120,594.92
  5. Step 5: Solve for x
    x = 62,296,120,594.92/285,447.82
  6. Step 6: Final answer
    x = 218,239.96

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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.