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Finding the Fourth Proportional to 331,364.64, 496,689.48 and 162,688.80

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Solution

The fourth proportional to 331,364.64, 496,689.48 and 162,688.80 is: 243,857.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,364.64 : 496,689.48 = 162,688.80 : x
  2. Step 2: Convert to fraction form
    331,364.64/496,689.48 = 162,688.80/x
  3. Step 3: Cross multiply
    331,364.64x = 496,689.48 × 162,688.80
  4. Step 4: Simplify right side
    331,364.64x = 80,805,815,473.82
  5. Step 5: Solve for x
    x = 80,805,815,473.82/331,364.64
  6. Step 6: Final answer
    x = 243,857.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.