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Finding the Fourth Proportional to 285,280.93, 393,709.85 and 157,968.37

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Solution

The fourth proportional to 285,280.93, 393,709.85 and 157,968.37 is: 218,008.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,280.93 : 393,709.85 = 157,968.37 : x
  2. Step 2: Convert to fraction form
    285,280.93/393,709.85 = 157,968.37/x
  3. Step 3: Cross multiply
    285,280.93x = 393,709.85 × 157,968.37
  4. Step 4: Simplify right side
    285,280.93x = 62,193,703,257.44
  5. Step 5: Solve for x
    x = 62,193,703,257.44/285,280.93
  6. Step 6: Final answer
    x = 218,008.62

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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.