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Finding the Fourth Proportional to 328,390.31, 492,590.33 and 216,785.27

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Solution

The fourth proportional to 328,390.31, 492,590.33 and 216,785.27 is: 325,181.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,390.31 : 492,590.33 = 216,785.27 : x
  2. Step 2: Convert to fraction form
    328,390.31/492,590.33 = 216,785.27/x
  3. Step 3: Cross multiply
    328,390.31x = 492,590.33 × 216,785.27
  4. Step 4: Simplify right side
    328,390.31x = 106,786,327,688.44
  5. Step 5: Solve for x
    x = 106,786,327,688.44/328,390.31
  6. Step 6: Final answer
    x = 325,181.12

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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.