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Finding the Fourth Proportional to 332,680.40, 499,085.40 and 143,140.40

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Solution

The fourth proportional to 332,680.40, 499,085.40 and 143,140.40 is: 214,738.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    332,680.40 : 499,085.40 = 143,140.40 : x
  2. Step 2: Convert to fraction form
    332,680.40/499,085.40 = 143,140.40/x
  3. Step 3: Cross multiply
    332,680.40x = 499,085.40 × 143,140.40
  4. Step 4: Simplify right side
    332,680.40x = 71,439,283,790.16
  5. Step 5: Solve for x
    x = 71,439,283,790.16/332,680.40
  6. Step 6: Final answer
    x = 214,738.48

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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.