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Finding the Fourth Proportional to 253,469.07, 349,782.03 and 138,744.90

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Solution

The fourth proportional to 253,469.07, 349,782.03 and 138,744.90 is: 191,465.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,469.07 : 349,782.03 = 138,744.90 : x
  2. Step 2: Convert to fraction form
    253,469.07/349,782.03 = 138,744.90/x
  3. Step 3: Cross multiply
    253,469.07x = 349,782.03 × 138,744.90
  4. Step 4: Simplify right side
    253,469.07x = 48,530,472,774.15
  5. Step 5: Solve for x
    x = 48,530,472,774.15/253,469.07
  6. Step 6: Final answer
    x = 191,465.07

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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.