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Finding the Fourth Proportional to 320,288.10, 480,487.41 and 130,851.42

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Solution

The fourth proportional to 320,288.10, 480,487.41 and 130,851.42 is: 196,299.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,288.10 : 480,487.41 = 130,851.42 : x
  2. Step 2: Convert to fraction form
    320,288.10/480,487.41 = 130,851.42/x
  3. Step 3: Cross multiply
    320,288.10x = 480,487.41 × 130,851.42
  4. Step 4: Simplify right side
    320,288.10x = 62,872,459,890.62
  5. Step 5: Solve for x
    x = 62,872,459,890.62/320,288.10
  6. Step 6: Final answer
    x = 196,299.71

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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.