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Finding the Fourth Proportional to 238,420.80, 357,631.20 and 149,736.60

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Solution

The fourth proportional to 238,420.80, 357,631.20 and 149,736.60 is: 224,604.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,420.80 : 357,631.20 = 149,736.60 : x
  2. Step 2: Convert to fraction form
    238,420.80/357,631.20 = 149,736.60/x
  3. Step 3: Cross multiply
    238,420.80x = 357,631.20 × 149,736.60
  4. Step 4: Simplify right side
    238,420.80x = 53,550,479,941.92
  5. Step 5: Solve for x
    x = 53,550,479,941.92/238,420.80
  6. Step 6: Final answer
    x = 224,604.90

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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.