Home / 326,868.12-490,288.86-90,204.75

Finding the Fourth Proportional to 326,868.12, 490,288.86 and 90,204.75

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Solution

The fourth proportional to 326,868.12, 490,288.86 and 90,204.75 is: 135,303.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,868.12 : 490,288.86 = 90,204.75 : x
  2. Step 2: Convert to fraction form
    326,868.12/490,288.86 = 90,204.75/x
  3. Step 3: Cross multiply
    326,868.12x = 490,288.86 × 90,204.75
  4. Step 4: Simplify right side
    326,868.12x = 44,226,384,044.09
  5. Step 5: Solve for x
    x = 44,226,384,044.09/326,868.12
  6. Step 6: Final answer
    x = 135,303.45

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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.