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Finding the Fourth Proportional to 279,296.64, 385,560 and 178,752.96

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Solution

The fourth proportional to 279,296.64, 385,560 and 178,752.96 is: 246,762.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,296.64 : 385,560 = 178,752.96 : x
  2. Step 2: Convert to fraction form
    279,296.64/385,560 = 178,752.96/x
  3. Step 3: Cross multiply
    279,296.64x = 385,560 × 178,752.96
  4. Step 4: Simplify right side
    279,296.64x = 68,919,991,257.60
  5. Step 5: Solve for x
    x = 68,919,991,257.60/279,296.64
  6. Step 6: Final answer
    x = 246,762.69

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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.