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Finding the Fourth Proportional to 228,671.87, 342,874.82 and 86,528.12

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Solution

The fourth proportional to 228,671.87, 342,874.82 and 86,528.12 is: 129,741.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,671.87 : 342,874.82 = 86,528.12 : x
  2. Step 2: Convert to fraction form
    228,671.87/342,874.82 = 86,528.12/x
  3. Step 3: Cross multiply
    228,671.87x = 342,874.82 × 86,528.12
  4. Step 4: Simplify right side
    228,671.87x = 29,668,311,855.56
  5. Step 5: Solve for x
    x = 29,668,311,855.56/228,671.87
  6. Step 6: Final answer
    x = 129,741.85

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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.