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Finding the Fourth Proportional to 328,618.60, 493,015.23 and 103,983.03

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Solution

The fourth proportional to 328,618.60, 493,015.23 and 103,983.03 is: 156,002.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,618.60 : 493,015.23 = 103,983.03 : x
  2. Step 2: Convert to fraction form
    328,618.60/493,015.23 = 103,983.03/x
  3. Step 3: Cross multiply
    328,618.60x = 493,015.23 × 103,983.03
  4. Step 4: Simplify right side
    328,618.60x = 51,265,217,451.55
  5. Step 5: Solve for x
    x = 51,265,217,451.55/328,618.60
  6. Step 6: Final answer
    x = 156,002.18

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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.