Home / 811,183.73-1,216,682.65-212,202.71

Finding the Fourth Proportional to 811,183.73, 1,216,682.65 and 212,202.71

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Solution

The fourth proportional to 811,183.73, 1,216,682.65 and 212,202.71 is: 318,279.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,183.73 : 1,216,682.65 = 212,202.71 : x
  2. Step 2: Convert to fraction form
    811,183.73/1,216,682.65 = 212,202.71/x
  3. Step 3: Cross multiply
    811,183.73x = 1,216,682.65 × 212,202.71
  4. Step 4: Simplify right side
    811,183.73x = 258,183,349,721.82
  5. Step 5: Solve for x
    x = 258,183,349,721.82/811,183.73
  6. Step 6: Final answer
    x = 318,279.74

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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.