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Finding the Fourth Proportional to 356,871.43, 492,437.18 and 203,919.54

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Solution

The fourth proportional to 356,871.43, 492,437.18 and 203,919.54 is: 281,383.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,871.43 : 492,437.18 = 203,919.54 : x
  2. Step 2: Convert to fraction form
    356,871.43/492,437.18 = 203,919.54/x
  3. Step 3: Cross multiply
    356,871.43x = 492,437.18 × 203,919.54
  4. Step 4: Simplify right side
    356,871.43x = 100,417,561,887.66
  5. Step 5: Solve for x
    x = 100,417,561,887.66/356,871.43
  6. Step 6: Final answer
    x = 281,383.02

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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.