Home / 211,867.64-317,531.17-99,299.51

Finding the Fourth Proportional to 211,867.64, 317,531.17 and 99,299.51

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Solution

The fourth proportional to 211,867.64, 317,531.17 and 99,299.51 is: 148,822.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,867.64 : 317,531.17 = 99,299.51 : x
  2. Step 2: Convert to fraction form
    211,867.64/317,531.17 = 99,299.51/x
  3. Step 3: Cross multiply
    211,867.64x = 317,531.17 × 99,299.51
  4. Step 4: Simplify right side
    211,867.64x = 31,530,689,590.73
  5. Step 5: Solve for x
    x = 31,530,689,590.73/211,867.64
  6. Step 6: Final answer
    x = 148,822.58

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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.