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Finding the Fourth Proportional to 323,611.60, 485,339.64 and 165,758.80

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Solution

The fourth proportional to 323,611.60, 485,339.64 and 165,758.80 is: 248,598.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,611.60 : 485,339.64 = 165,758.80 : x
  2. Step 2: Convert to fraction form
    323,611.60/485,339.64 = 165,758.80/x
  3. Step 3: Cross multiply
    323,611.60x = 485,339.64 × 165,758.80
  4. Step 4: Simplify right side
    323,611.60x = 80,449,316,318.83
  5. Step 5: Solve for x
    x = 80,449,316,318.83/323,611.60
  6. Step 6: Final answer
    x = 248,598.37

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1.5x scale

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.