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Finding the Fourth Proportional to 406,391.04, 609,629.76 and 125,930.16

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Solution

The fourth proportional to 406,391.04, 609,629.76 and 125,930.16 is: 188,908.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,391.04 : 609,629.76 = 125,930.16 : x
  2. Step 2: Convert to fraction form
    406,391.04/609,629.76 = 125,930.16/x
  3. Step 3: Cross multiply
    406,391.04x = 609,629.76 × 125,930.16
  4. Step 4: Simplify right side
    406,391.04x = 76,770,773,217.56
  5. Step 5: Solve for x
    x = 76,770,773,217.56/406,391.04
  6. Step 6: Final answer
    x = 188,908.63

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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.