Home / 311,985.64-430,540.22-168,745.69

Finding the Fourth Proportional to 311,985.64, 430,540.22 and 168,745.69

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Solution

The fourth proportional to 311,985.64, 430,540.22 and 168,745.69 is: 232,869.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,985.64 : 430,540.22 = 168,745.69 : x
  2. Step 2: Convert to fraction form
    311,985.64/430,540.22 = 168,745.69/x
  3. Step 3: Cross multiply
    311,985.64x = 430,540.22 × 168,745.69
  4. Step 4: Simplify right side
    311,985.64x = 72,651,804,576.57
  5. Step 5: Solve for x
    x = 72,651,804,576.57/311,985.64
  6. Step 6: Final answer
    x = 232,869.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.