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Finding the Fourth Proportional to 253,232.93, 379,709.17 and 103,578.31

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Solution

The fourth proportional to 253,232.93, 379,709.17 and 103,578.31 is: 155,310.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,232.93 : 379,709.17 = 103,578.31 : x
  2. Step 2: Convert to fraction form
    253,232.93/379,709.17 = 103,578.31/x
  3. Step 3: Cross multiply
    253,232.93x = 379,709.17 × 103,578.31
  4. Step 4: Simplify right side
    253,232.93x = 39,329,634,335.79
  5. Step 5: Solve for x
    x = 39,329,634,335.79/253,232.93
  6. Step 6: Final answer
    x = 155,310.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.