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Finding the Fourth Proportional to 328,994.38, 493,509.60 and 104,338.55

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Solution

The fourth proportional to 328,994.38, 493,509.60 and 104,338.55 is: 156,513.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,994.38 : 493,509.60 = 104,338.55 : x
  2. Step 2: Convert to fraction form
    328,994.38/493,509.60 = 104,338.55/x
  3. Step 3: Cross multiply
    328,994.38x = 493,509.60 × 104,338.55
  4. Step 4: Simplify right side
    328,994.38x = 51,492,075,553.39
  5. Step 5: Solve for x
    x = 51,492,075,553.39/328,994.38
  6. Step 6: Final answer
    x = 156,513.54

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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.