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Finding the Fourth Proportional to 326,519.59, 489,742.63 and 113,248.21

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Solution

The fourth proportional to 326,519.59, 489,742.63 and 113,248.21 is: 169,859.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,519.59 : 489,742.63 = 113,248.21 : x
  2. Step 2: Convert to fraction form
    326,519.59/489,742.63 = 113,248.21/x
  3. Step 3: Cross multiply
    326,519.59x = 489,742.63 × 113,248.21
  4. Step 4: Simplify right side
    326,519.59x = 55,462,474,700.72
  5. Step 5: Solve for x
    x = 55,462,474,700.72/326,519.59
  6. Step 6: Final answer
    x = 169,859.56

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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.