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Finding the Fourth Proportional to 326,559.49, 490,025.78 and 126,853.89

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Solution

The fourth proportional to 326,559.49, 490,025.78 and 126,853.89 is: 190,353.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,559.49 : 490,025.78 = 126,853.89 : x
  2. Step 2: Convert to fraction form
    326,559.49/490,025.78 = 126,853.89/x
  3. Step 3: Cross multiply
    326,559.49x = 490,025.78 × 126,853.89
  4. Step 4: Simplify right side
    326,559.49x = 62,161,676,393.28
  5. Step 5: Solve for x
    x = 62,161,676,393.28/326,559.49
  6. Step 6: Final answer
    x = 190,353.30

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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.