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Finding the Fourth Proportional to 253,181.15, 349,375.85 and 138,437.00

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Solution

The fourth proportional to 253,181.15, 349,375.85 and 138,437.00 is: 191,035.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,181.15 : 349,375.85 = 138,437.00 : x
  2. Step 2: Convert to fraction form
    253,181.15/349,375.85 = 138,437.00/x
  3. Step 3: Cross multiply
    253,181.15x = 349,375.85 × 138,437.00
  4. Step 4: Simplify right side
    253,181.15x = 48,366,545,765.98
  5. Step 5: Solve for x
    x = 48,366,545,765.98/253,181.15
  6. Step 6: Final answer
    x = 191,035.33

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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.