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Finding the Fourth Proportional to 328,627.20, 492,940.80 and 118,237.80

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Solution

The fourth proportional to 328,627.20, 492,940.80 and 118,237.80 is: 177,356.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,627.20 : 492,940.80 = 118,237.80 : x
  2. Step 2: Convert to fraction form
    328,627.20/492,940.80 = 118,237.80/x
  3. Step 3: Cross multiply
    328,627.20x = 492,940.80 × 118,237.80
  4. Step 4: Simplify right side
    328,627.20x = 58,284,235,722.24
  5. Step 5: Solve for x
    x = 58,284,235,722.24/328,627.20
  6. Step 6: Final answer
    x = 177,356.70

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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.