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Finding the Fourth Proportional to 326,012.56, 449,898.48 and 190,140.32

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Solution

The fourth proportional to 326,012.56, 449,898.48 and 190,140.32 is: 262,394.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,012.56 : 449,898.48 = 190,140.32 : x
  2. Step 2: Convert to fraction form
    326,012.56/449,898.48 = 190,140.32/x
  3. Step 3: Cross multiply
    326,012.56x = 449,898.48 × 190,140.32
  4. Step 4: Simplify right side
    326,012.56x = 85,543,840,954.71
  5. Step 5: Solve for x
    x = 85,543,840,954.71/326,012.56
  6. Step 6: Final answer
    x = 262,394.31

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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.