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Finding the Fourth Proportional to 230,813.40, 346,220.10 and 81,003.90

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Solution

The fourth proportional to 230,813.40, 346,220.10 and 81,003.90 is: 121,505.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,813.40 : 346,220.10 = 81,003.90 : x
  2. Step 2: Convert to fraction form
    230,813.40/346,220.10 = 81,003.90/x
  3. Step 3: Cross multiply
    230,813.40x = 346,220.10 × 81,003.90
  4. Step 4: Simplify right side
    230,813.40x = 28,045,178,358.39
  5. Step 5: Solve for x
    x = 28,045,178,358.39/230,813.40
  6. Step 6: Final answer
    x = 121,505.85

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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.