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Finding the Fourth Proportional to 308,376.71, 425,691.01 and 187,556.80

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Solution

The fourth proportional to 308,376.71, 425,691.01 and 187,556.80 is: 258,908.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,376.71 : 425,691.01 = 187,556.80 : x
  2. Step 2: Convert to fraction form
    308,376.71/425,691.01 = 187,556.80/x
  3. Step 3: Cross multiply
    308,376.71x = 425,691.01 × 187,556.80
  4. Step 4: Simplify right side
    308,376.71x = 79,841,243,624.37
  5. Step 5: Solve for x
    x = 79,841,243,624.37/308,376.71
  6. Step 6: Final answer
    x = 258,908.15

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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.