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Finding the Fourth Proportional to 230,742.90, 346,269.15 and 80,982.90

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Solution

The fourth proportional to 230,742.90, 346,269.15 and 80,982.90 is: 121,528.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,742.90 : 346,269.15 = 80,982.90 : x
  2. Step 2: Convert to fraction form
    230,742.90/346,269.15 = 80,982.90/x
  3. Step 3: Cross multiply
    230,742.90x = 346,269.15 × 80,982.90
  4. Step 4: Simplify right side
    230,742.90x = 28,041,879,947.54
  5. Step 5: Solve for x
    x = 28,041,879,947.54/230,742.90
  6. Step 6: Final answer
    x = 121,528.68

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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.