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Finding the Fourth Proportional to 230,911.40, 346,280.70 and 81,093.80

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Solution

The fourth proportional to 230,911.40, 346,280.70 and 81,093.80 is: 121,610.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,911.40 : 346,280.70 = 81,093.80 : x
  2. Step 2: Convert to fraction form
    230,911.40/346,280.70 = 81,093.80/x
  3. Step 3: Cross multiply
    230,911.40x = 346,280.70 × 81,093.80
  4. Step 4: Simplify right side
    230,911.40x = 28,081,217,829.66
  5. Step 5: Solve for x
    x = 28,081,217,829.66/230,911.40
  6. Step 6: Final answer
    x = 121,610.36

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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.