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Finding the Fourth Proportional to 281,963.08, 389,114.04 and 154,637.56

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Solution

The fourth proportional to 281,963.08, 389,114.04 and 154,637.56 is: 213,402.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,963.08 : 389,114.04 = 154,637.56 : x
  2. Step 2: Convert to fraction form
    281,963.08/389,114.04 = 154,637.56/x
  3. Step 3: Cross multiply
    281,963.08x = 389,114.04 × 154,637.56
  4. Step 4: Simplify right side
    281,963.08x = 60,171,645,707.34
  5. Step 5: Solve for x
    x = 60,171,645,707.34/281,963.08
  6. Step 6: Final answer
    x = 213,402.57

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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.