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Finding the Fourth Proportional to 328,911.42, 492,969.83 and 160,178.90

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Solution

The fourth proportional to 328,911.42, 492,969.83 and 160,178.90 is: 240,074.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,911.42 : 492,969.83 = 160,178.90 : x
  2. Step 2: Convert to fraction form
    328,911.42/492,969.83 = 160,178.90/x
  3. Step 3: Cross multiply
    328,911.42x = 492,969.83 × 160,178.90
  4. Step 4: Simplify right side
    328,911.42x = 78,963,361,836.84
  5. Step 5: Solve for x
    x = 78,963,361,836.84/328,911.42
  6. Step 6: Final answer
    x = 240,074.86

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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.