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Finding the Fourth Proportional to 373,668.80, 560,438.40 and 136,889.60

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Solution

The fourth proportional to 373,668.80, 560,438.40 and 136,889.60 is: 205,310.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,668.80 : 560,438.40 = 136,889.60 : x
  2. Step 2: Convert to fraction form
    373,668.80/560,438.40 = 136,889.60/x
  3. Step 3: Cross multiply
    373,668.80x = 560,438.40 × 136,889.60
  4. Step 4: Simplify right side
    373,668.80x = 76,718,188,400.64
  5. Step 5: Solve for x
    x = 76,718,188,400.64/373,668.80
  6. Step 6: Final answer
    x = 205,310.66

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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.