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Finding the Fourth Proportional to 356,687.70, 492,249.10 and 211,579.52

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Solution

The fourth proportional to 356,687.70, 492,249.10 and 211,579.52 is: 291,991.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,687.70 : 492,249.10 = 211,579.52 : x
  2. Step 2: Convert to fraction form
    356,687.70/492,249.10 = 211,579.52/x
  3. Step 3: Cross multiply
    356,687.70x = 492,249.10 × 211,579.52
  4. Step 4: Simplify right side
    356,687.70x = 104,149,828,298.43
  5. Step 5: Solve for x
    x = 104,149,828,298.43/356,687.70
  6. Step 6: Final answer
    x = 291,991.65

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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.