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Finding the Fourth Proportional to 253,387.80, 349,712.26 and 145,936.92

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Solution

The fourth proportional to 253,387.80, 349,712.26 and 145,936.92 is: 201,414.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,387.80 : 349,712.26 = 145,936.92 : x
  2. Step 2: Convert to fraction form
    253,387.80/349,712.26 = 145,936.92/x
  3. Step 3: Cross multiply
    253,387.80x = 349,712.26 × 145,936.92
  4. Step 4: Simplify right side
    253,387.80x = 51,035,930,110.64
  5. Step 5: Solve for x
    x = 51,035,930,110.64/253,387.80
  6. Step 6: Final answer
    x = 201,414.31

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1.5x scale

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.