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Finding the Fourth Proportional to 279,493.22, 385,687.76 and 152,168.42

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Solution

The fourth proportional to 279,493.22, 385,687.76 and 152,168.42 is: 209,985.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,493.22 : 385,687.76 = 152,168.42 : x
  2. Step 2: Convert to fraction form
    279,493.22/385,687.76 = 152,168.42/x
  3. Step 3: Cross multiply
    279,493.22x = 385,687.76 × 152,168.42
  4. Step 4: Simplify right side
    279,493.22x = 58,689,497,052.54
  5. Step 5: Solve for x
    x = 58,689,497,052.54/279,493.22
  6. Step 6: Final answer
    x = 209,985.41

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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.