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Finding the Fourth Proportional to 326,998.79, 490,622.72 and 113,790.39

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Solution

The fourth proportional to 326,998.79, 490,622.72 and 113,790.39 is: 170,728.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,998.79 : 490,622.72 = 113,790.39 : x
  2. Step 2: Convert to fraction form
    326,998.79/490,622.72 = 113,790.39/x
  3. Step 3: Cross multiply
    326,998.79x = 490,622.72 × 113,790.39
  4. Step 4: Simplify right side
    326,998.79x = 55,828,150,082.71
  5. Step 5: Solve for x
    x = 55,828,150,082.71/326,998.79
  6. Step 6: Final answer
    x = 170,728.92

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1.5x scale

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.