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Finding the Fourth Proportional to 356,857.21, 492,469.26 and 195,710.86

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Solution

The fourth proportional to 356,857.21, 492,469.26 and 195,710.86 is: 270,084.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,857.21 : 492,469.26 = 195,710.86 : x
  2. Step 2: Convert to fraction form
    356,857.21/492,469.26 = 195,710.86/x
  3. Step 3: Cross multiply
    356,857.21x = 492,469.26 × 195,710.86
  4. Step 4: Simplify right side
    356,857.21x = 96,381,579,935.82
  5. Step 5: Solve for x
    x = 96,381,579,935.82/356,857.21
  6. Step 6: Final answer
    x = 270,084.44

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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.