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Finding the Fourth Proportional to 289,377.36, 399,207.82 and 187,436.84

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Solution

The fourth proportional to 289,377.36, 399,207.82 and 187,436.84 is: 258,576.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,377.36 : 399,207.82 = 187,436.84 : x
  2. Step 2: Convert to fraction form
    289,377.36/399,207.82 = 187,436.84/x
  3. Step 3: Cross multiply
    289,377.36x = 399,207.82 × 187,436.84
  4. Step 4: Simplify right side
    289,377.36x = 74,826,252,284.09
  5. Step 5: Solve for x
    x = 74,826,252,284.09/289,377.36
  6. Step 6: Final answer
    x = 258,576.73

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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.