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Finding the Fourth Proportional to 308,379.42, 425,540.25 and 187,503.93

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Solution

The fourth proportional to 308,379.42, 425,540.25 and 187,503.93 is: 258,741.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,379.42 : 425,540.25 = 187,503.93 : x
  2. Step 2: Convert to fraction form
    308,379.42/425,540.25 = 187,503.93/x
  3. Step 3: Cross multiply
    308,379.42x = 425,540.25 × 187,503.93
  4. Step 4: Simplify right side
    308,379.42x = 79,790,469,248.18
  5. Step 5: Solve for x
    x = 79,790,469,248.18/308,379.42
  6. Step 6: Final answer
    x = 258,741.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.