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Finding the Fourth Proportional to 227,813.40, 341,720.10 and 78,003.90

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Solution

The fourth proportional to 227,813.40, 341,720.10 and 78,003.90 is: 117,005.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    227,813.40 : 341,720.10 = 78,003.90 : x
  2. Step 2: Convert to fraction form
    227,813.40/341,720.10 = 78,003.90/x
  3. Step 3: Cross multiply
    227,813.40x = 341,720.10 × 78,003.90
  4. Step 4: Simplify right side
    227,813.40x = 26,655,500,508.39
  5. Step 5: Solve for x
    x = 26,655,500,508.39/227,813.40
  6. Step 6: Final answer
    x = 117,005.85

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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.