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Finding the Fourth Proportional to 230,857.90, 346,200.45 and 81,040.30

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Solution

The fourth proportional to 230,857.90, 346,200.45 and 81,040.30 is: 121,530.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,857.90 : 346,200.45 = 81,040.30 : x
  2. Step 2: Convert to fraction form
    230,857.90/346,200.45 = 81,040.30/x
  3. Step 3: Cross multiply
    230,857.90x = 346,200.45 × 81,040.30
  4. Step 4: Simplify right side
    230,857.90x = 28,056,188,328.14
  5. Step 5: Solve for x
    x = 28,056,188,328.14/230,857.90
  6. Step 6: Final answer
    x = 121,530.12

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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.