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Finding the Fourth Proportional to 357,485.88, 493,343.82 and 196,345.56

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Solution

The fourth proportional to 357,485.88, 493,343.82 and 196,345.56 is: 270,964.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,485.88 : 493,343.82 = 196,345.56 : x
  2. Step 2: Convert to fraction form
    357,485.88/493,343.82 = 196,345.56/x
  3. Step 3: Cross multiply
    357,485.88x = 493,343.82 × 196,345.56
  4. Step 4: Simplify right side
    357,485.88x = 96,865,868,610.44
  5. Step 5: Solve for x
    x = 96,865,868,610.44/357,485.88
  6. Step 6: Final answer
    x = 270,964.18

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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.