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Finding the Fourth Proportional to 253,317.78, 349,562.79 and 140,140.53

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Solution

The fourth proportional to 253,317.78, 349,562.79 and 140,140.53 is: 193,385.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,317.78 : 349,562.79 = 140,140.53 : x
  2. Step 2: Convert to fraction form
    253,317.78/349,562.79 = 140,140.53/x
  3. Step 3: Cross multiply
    253,317.78x = 349,562.79 × 140,140.53
  4. Step 4: Simplify right side
    253,317.78x = 48,987,914,658.88
  5. Step 5: Solve for x
    x = 48,987,914,658.88/253,317.78
  6. Step 6: Final answer
    x = 193,385.22

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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.