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Finding the Fourth Proportional to 326,114.82, 449,810.79 and 315,141.56

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Solution

The fourth proportional to 326,114.82, 449,810.79 and 315,141.56 is: 434,675.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,114.82 : 449,810.79 = 315,141.56 : x
  2. Step 2: Convert to fraction form
    326,114.82/449,810.79 = 315,141.56/x
  3. Step 3: Cross multiply
    326,114.82x = 449,810.79 × 315,141.56
  4. Step 4: Simplify right side
    326,114.82x = 141,754,071,816.38
  5. Step 5: Solve for x
    x = 141,754,071,816.38/326,114.82
  6. Step 6: Final answer
    x = 434,675.34

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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.