Home / 311,985.61-430,540.17-168,745.66

Finding the Fourth Proportional to 311,985.61, 430,540.17 and 168,745.66

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Solution

The fourth proportional to 311,985.61, 430,540.17 and 168,745.66 is: 232,869.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,985.61 : 430,540.17 = 168,745.66 : x
  2. Step 2: Convert to fraction form
    311,985.61/430,540.17 = 168,745.66/x
  3. Step 3: Cross multiply
    311,985.61x = 430,540.17 × 168,745.66
  4. Step 4: Simplify right side
    311,985.61x = 72,651,785,143.16
  5. Step 5: Solve for x
    x = 72,651,785,143.16/311,985.61
  6. Step 6: Final answer
    x = 232,869.03

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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.