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Finding the Fourth Proportional to 253,409.52, 349,703.64 and 145,939.44

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Solution

The fourth proportional to 253,409.52, 349,703.64 and 145,939.44 is: 201,395.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,409.52 : 349,703.64 = 145,939.44 : x
  2. Step 2: Convert to fraction form
    253,409.52/349,703.64 = 145,939.44/x
  3. Step 3: Cross multiply
    253,409.52x = 349,703.64 × 145,939.44
  4. Step 4: Simplify right side
    253,409.52x = 51,035,553,387.56
  5. Step 5: Solve for x
    x = 51,035,553,387.56/253,409.52
  6. Step 6: Final answer
    x = 201,395.56

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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.