Home / 461,285.20-691,697.40-211,685.20

Finding the Fourth Proportional to 461,285.20, 691,697.40 and 211,685.20

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Solution

The fourth proportional to 461,285.20, 691,697.40 and 211,685.20 is: 317,422.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    461,285.20 : 691,697.40 = 211,685.20 : x
  2. Step 2: Convert to fraction form
    461,285.20/691,697.40 = 211,685.20/x
  3. Step 3: Cross multiply
    461,285.20x = 691,697.40 × 211,685.20
  4. Step 4: Simplify right side
    461,285.20x = 146,422,102,458.48
  5. Step 5: Solve for x
    x = 146,422,102,458.48/461,285.20
  6. Step 6: Final answer
    x = 317,422.07

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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.