Home / 281,128.89-387,685.44-238,105.14

Finding the Fourth Proportional to 281,128.89, 387,685.44 and 238,105.14

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Solution

The fourth proportional to 281,128.89, 387,685.44 and 238,105.14 is: 328,354.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,128.89 : 387,685.44 = 238,105.14 : x
  2. Step 2: Convert to fraction form
    281,128.89/387,685.44 = 238,105.14/x
  3. Step 3: Cross multiply
    281,128.89x = 387,685.44 × 238,105.14
  4. Step 4: Simplify right side
    281,128.89x = 92,309,894,513.34
  5. Step 5: Solve for x
    x = 92,309,894,513.34/281,128.89
  6. Step 6: Final answer
    x = 328,354.35

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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.