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Finding the Fourth Proportional to 230,760.90, 346,296.15 and 81,000.90

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Solution

The fourth proportional to 230,760.90, 346,296.15 and 81,000.90 is: 121,555.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,760.90 : 346,296.15 = 81,000.90 : x
  2. Step 2: Convert to fraction form
    230,760.90/346,296.15 = 81,000.90/x
  3. Step 3: Cross multiply
    230,760.90x = 346,296.15 × 81,000.90
  4. Step 4: Simplify right side
    230,760.90x = 28,050,299,816.54
  5. Step 5: Solve for x
    x = 28,050,299,816.54/230,760.90
  6. Step 6: Final answer
    x = 121,555.69

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1.5x scale

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.