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Finding the Fourth Proportional to 253,475.40, 349,759.44 and 140,297.88

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Solution

The fourth proportional to 253,475.40, 349,759.44 and 140,297.88 is: 193,590.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,475.40 : 349,759.44 = 140,297.88 : x
  2. Step 2: Convert to fraction form
    253,475.40/349,759.44 = 140,297.88/x
  3. Step 3: Cross multiply
    253,475.40x = 349,759.44 × 140,297.88
  4. Step 4: Simplify right side
    253,475.40x = 49,070,507,941.99
  5. Step 5: Solve for x
    x = 49,070,507,941.99/253,475.40
  6. Step 6: Final answer
    x = 193,590.81

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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.