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Finding the Fourth Proportional to 328,164.60, 492,316.56 and 103,589.94

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Solution

The fourth proportional to 328,164.60, 492,316.56 and 103,589.94 is: 155,406.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,164.60 : 492,316.56 = 103,589.94 : x
  2. Step 2: Convert to fraction form
    328,164.60/492,316.56 = 103,589.94/x
  3. Step 3: Cross multiply
    328,164.60x = 492,316.56 × 103,589.94
  4. Step 4: Simplify right side
    328,164.60x = 50,999,042,911.41
  5. Step 5: Solve for x
    x = 50,999,042,911.41/328,164.60
  6. Step 6: Final answer
    x = 155,406.90

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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.