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Finding the Fourth Proportional to 328,311.60, 492,175.80 and 216,045.60

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Solution

The fourth proportional to 328,311.60, 492,175.80 and 216,045.60 is: 323,876.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,311.60 : 492,175.80 = 216,045.60 : x
  2. Step 2: Convert to fraction form
    328,311.60/492,175.80 = 216,045.60/x
  3. Step 3: Cross multiply
    328,311.60x = 492,175.80 × 216,045.60
  4. Step 4: Simplify right side
    328,311.60x = 106,332,416,016.48
  5. Step 5: Solve for x
    x = 106,332,416,016.48/328,311.60
  6. Step 6: Final answer
    x = 323,876.51

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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.