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Finding the Fourth Proportional to 326,901.96, 490,381.16 and 90,244.68

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Solution

The fourth proportional to 326,901.96, 490,381.16 and 90,244.68 is: 135,374.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,901.96 : 490,381.16 = 90,244.68 : x
  2. Step 2: Convert to fraction form
    326,901.96/490,381.16 = 90,244.68/x
  3. Step 3: Cross multiply
    326,901.96x = 490,381.16 × 90,244.68
  4. Step 4: Simplify right side
    326,901.96x = 44,254,290,862.23
  5. Step 5: Solve for x
    x = 44,254,290,862.23/326,901.96
  6. Step 6: Final answer
    x = 135,374.81

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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.