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Finding the Fourth Proportional to 308,351.64, 425,656.42 and 187,531.73

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Solution

The fourth proportional to 308,351.64, 425,656.42 and 187,531.73 is: 258,873.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,351.64 : 425,656.42 = 187,531.73 : x
  2. Step 2: Convert to fraction form
    308,351.64/425,656.42 = 187,531.73/x
  3. Step 3: Cross multiply
    308,351.64x = 425,656.42 × 187,531.73
  4. Step 4: Simplify right side
    308,351.64x = 79,824,084,828.21
  5. Step 5: Solve for x
    x = 79,824,084,828.21/308,351.64
  6. Step 6: Final answer
    x = 258,873.55

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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.