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Finding the Fourth Proportional to 279,688.34, 385,972.56 and 158,832.14

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Solution

The fourth proportional to 279,688.34, 385,972.56 and 158,832.14 is: 219,189.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,688.34 : 385,972.56 = 158,832.14 : x
  2. Step 2: Convert to fraction form
    279,688.34/385,972.56 = 158,832.14/x
  3. Step 3: Cross multiply
    279,688.34x = 385,972.56 × 158,832.14
  4. Step 4: Simplify right side
    279,688.34x = 61,304,847,686.08
  5. Step 5: Solve for x
    x = 61,304,847,686.08/279,688.34
  6. Step 6: Final answer
    x = 219,189.86

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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.