Home / 204,360.30-306,431.10-85,897.80

Finding the Fourth Proportional to 204,360.30, 306,431.10 and 85,897.80

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Solution

The fourth proportional to 204,360.30, 306,431.10 and 85,897.80 is: 128,800.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,360.30 : 306,431.10 = 85,897.80 : x
  2. Step 2: Convert to fraction form
    204,360.30/306,431.10 = 85,897.80/x
  3. Step 3: Cross multiply
    204,360.30x = 306,431.10 × 85,897.80
  4. Step 4: Simplify right side
    204,360.30x = 26,321,757,341.58
  5. Step 5: Solve for x
    x = 26,321,757,341.58/204,360.30
  6. Step 6: Final answer
    x = 128,800.74

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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.