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Finding the Fourth Proportional to 289,806.13, 399,850.69 and 187,835.89

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Solution

The fourth proportional to 289,806.13, 399,850.69 and 187,835.89 is: 259,160.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,806.13 : 399,850.69 = 187,835.89 : x
  2. Step 2: Convert to fraction form
    289,806.13/399,850.69 = 187,835.89/x
  3. Step 3: Cross multiply
    289,806.13x = 399,850.69 × 187,835.89
  4. Step 4: Simplify right side
    289,806.13x = 75,106,308,995.52
  5. Step 5: Solve for x
    x = 75,106,308,995.52/289,806.13
  6. Step 6: Final answer
    x = 259,160.53

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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.