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Finding the Fourth Proportional to 326,675.30, 490,015.44 and 90,030.96

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Solution

The fourth proportional to 326,675.30, 490,015.44 and 90,030.96 is: 135,047.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,675.30 : 490,015.44 = 90,030.96 : x
  2. Step 2: Convert to fraction form
    326,675.30/490,015.44 = 90,030.96/x
  3. Step 3: Cross multiply
    326,675.30x = 490,015.44 × 90,030.96
  4. Step 4: Simplify right side
    326,675.30x = 44,116,560,478.02
  5. Step 5: Solve for x
    x = 44,116,560,478.02/326,675.30
  6. Step 6: Final answer
    x = 135,047.13

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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.