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Finding the Fourth Proportional to 253,559.25, 349,910.49 and 138,835.81

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Solution

The fourth proportional to 253,559.25, 349,910.49 and 138,835.81 is: 191,592.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,559.25 : 349,910.49 = 138,835.81 : x
  2. Step 2: Convert to fraction form
    253,559.25/349,910.49 = 138,835.81/x
  3. Step 3: Cross multiply
    253,559.25x = 349,910.49 × 138,835.81
  4. Step 4: Simplify right side
    253,559.25x = 48,580,106,306.65
  5. Step 5: Solve for x
    x = 48,580,106,306.65/253,559.25
  6. Step 6: Final answer
    x = 191,592.72

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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.