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Finding the Fourth Proportional to 253,543, 349,876.03 and 138,799.65

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Solution

The fourth proportional to 253,543, 349,876.03 and 138,799.65 is: 191,536.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,543 : 349,876.03 = 138,799.65 : x
  2. Step 2: Convert to fraction form
    253,543/349,876.03 = 138,799.65/x
  3. Step 3: Cross multiply
    253,543x = 349,876.03 × 138,799.65
  4. Step 4: Simplify right side
    253,543x = 48,562,670,507.39
  5. Step 5: Solve for x
    x = 48,562,670,507.39/253,543
  6. Step 6: Final answer
    x = 191,536.23

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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.