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Finding the Fourth Proportional to 279,528.62, 385,755.83 and 158,658.60

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Solution

The fourth proportional to 279,528.62, 385,755.83 and 158,658.60 is: 218,952.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,528.62 : 385,755.83 = 158,658.60 : x
  2. Step 2: Convert to fraction form
    279,528.62/385,755.83 = 158,658.60/x
  3. Step 3: Cross multiply
    279,528.62x = 385,755.83 × 158,658.60
  4. Step 4: Simplify right side
    279,528.62x = 61,203,479,929.64
  5. Step 5: Solve for x
    x = 61,203,479,929.64/279,528.62
  6. Step 6: Final answer
    x = 218,952.46

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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.