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Finding the Fourth Proportional to 356,870.70, 492,672.83 and 275,619.42

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Solution

The fourth proportional to 356,870.70, 492,672.83 and 275,619.42 is: 380,502.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,870.70 : 492,672.83 = 275,619.42 : x
  2. Step 2: Convert to fraction form
    356,870.70/492,672.83 = 275,619.42/x
  3. Step 3: Cross multiply
    356,870.70x = 492,672.83 × 275,619.42
  4. Step 4: Simplify right side
    356,870.70x = 135,790,198,276.26
  5. Step 5: Solve for x
    x = 135,790,198,276.26/356,870.70
  6. Step 6: Final answer
    x = 380,502.51

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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.