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Finding the Fourth Proportional to 326,199.80, 489,182.31 and 112,909.76

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Solution

The fourth proportional to 326,199.80, 489,182.31 and 112,909.76 is: 169,324.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,199.80 : 489,182.31 = 112,909.76 : x
  2. Step 2: Convert to fraction form
    326,199.80/489,182.31 = 112,909.76/x
  3. Step 3: Cross multiply
    326,199.80x = 489,182.31 × 112,909.76
  4. Step 4: Simplify right side
    326,199.80x = 55,233,457,218.35
  5. Step 5: Solve for x
    x = 55,233,457,218.35/326,199.80
  6. Step 6: Final answer
    x = 169,324.01

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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.