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Finding the Fourth Proportional to 285,414.89, 393,885.53 and 158,090.48

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Solution

The fourth proportional to 285,414.89, 393,885.53 and 158,090.48 is: 218,172.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,414.89 : 393,885.53 = 158,090.48 : x
  2. Step 2: Convert to fraction form
    285,414.89/393,885.53 = 158,090.48/x
  3. Step 3: Cross multiply
    285,414.89x = 393,885.53 × 158,090.48
  4. Step 4: Simplify right side
    285,414.89x = 62,269,554,917.65
  5. Step 5: Solve for x
    x = 62,269,554,917.65/285,414.89
  6. Step 6: Final answer
    x = 218,172.06

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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.