Home / 381,254.80-571,882.20-210,012.70

Finding the Fourth Proportional to 381,254.80, 571,882.20 and 210,012.70

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Solution

The fourth proportional to 381,254.80, 571,882.20 and 210,012.70 is: 315,019.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,254.80 : 571,882.20 = 210,012.70 : x
  2. Step 2: Convert to fraction form
    381,254.80/571,882.20 = 210,012.70/x
  3. Step 3: Cross multiply
    381,254.80x = 571,882.20 × 210,012.70
  4. Step 4: Simplify right side
    381,254.80x = 120,102,524,903.94
  5. Step 5: Solve for x
    x = 120,102,524,903.94/381,254.80
  6. Step 6: Final answer
    x = 315,019.05

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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.