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Finding the Fourth Proportional to 323,804.28, 485,412.36 and 113,327.40

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Solution

The fourth proportional to 323,804.28, 485,412.36 and 113,327.40 is: 169,888.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,804.28 : 485,412.36 = 113,327.40 : x
  2. Step 2: Convert to fraction form
    323,804.28/485,412.36 = 113,327.40/x
  3. Step 3: Cross multiply
    323,804.28x = 485,412.36 × 113,327.40
  4. Step 4: Simplify right side
    323,804.28x = 55,010,520,686.66
  5. Step 5: Solve for x
    x = 55,010,520,686.66/323,804.28
  6. Step 6: Final answer
    x = 169,888.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.