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Finding the Fourth Proportional to 285,316.92, 393,737.26 and 157,992.48

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Solution

The fourth proportional to 285,316.92, 393,737.26 and 157,992.48 is: 218,029.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,316.92 : 393,737.26 = 157,992.48 : x
  2. Step 2: Convert to fraction form
    285,316.92/393,737.26 = 157,992.48/x
  3. Step 3: Cross multiply
    285,316.92x = 393,737.26 × 157,992.48
  4. Step 4: Simplify right side
    285,316.92x = 62,207,526,175.80
  5. Step 5: Solve for x
    x = 62,207,526,175.80/285,316.92
  6. Step 6: Final answer
    x = 218,029.57

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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.