Home / 256,569.12-384,795.36-123,380.82

Finding the Fourth Proportional to 256,569.12, 384,795.36 and 123,380.82

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Solution

The fourth proportional to 256,569.12, 384,795.36 and 123,380.82 is: 185,043.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,569.12 : 384,795.36 = 123,380.82 : x
  2. Step 2: Convert to fraction form
    256,569.12/384,795.36 = 123,380.82/x
  3. Step 3: Cross multiply
    256,569.12x = 384,795.36 × 123,380.82
  4. Step 4: Simplify right side
    256,569.12x = 47,476,367,049.00
  5. Step 5: Solve for x
    x = 47,476,367,049.00/256,569.12
  6. Step 6: Final answer
    x = 185,043.18

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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.