Home / 256,834.48-384,930.84-123,690

Finding the Fourth Proportional to 256,834.48, 384,930.84 and 123,690

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Solution

The fourth proportional to 256,834.48, 384,930.84 and 123,690 is: 185,380.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,834.48 : 384,930.84 = 123,690 : x
  2. Step 2: Convert to fraction form
    256,834.48/384,930.84 = 123,690/x
  3. Step 3: Cross multiply
    256,834.48x = 384,930.84 × 123,690
  4. Step 4: Simplify right side
    256,834.48x = 47,612,095,599.60
  5. Step 5: Solve for x
    x = 47,612,095,599.60/256,834.48
  6. Step 6: Final answer
    x = 185,380.47

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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.