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Finding the Fourth Proportional to 253,889.49, 380,272.67 and 103,674.26

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Solution

The fourth proportional to 253,889.49, 380,272.67 and 103,674.26 is: 155,282.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,889.49 : 380,272.67 = 103,674.26 : x
  2. Step 2: Convert to fraction form
    253,889.49/380,272.67 = 103,674.26/x
  3. Step 3: Cross multiply
    253,889.49x = 380,272.67 × 103,674.26
  4. Step 4: Simplify right side
    253,889.49x = 39,424,487,660.47
  5. Step 5: Solve for x
    x = 39,424,487,660.47/253,889.49
  6. Step 6: Final answer
    x = 155,282.08

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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.