Home / 256,625.88-384,914-79,085.20

Finding the Fourth Proportional to 256,625.88, 384,914 and 79,085.20

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Solution

The fourth proportional to 256,625.88, 384,914 and 79,085.20 is: 118,620.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,625.88 : 384,914 = 79,085.20 : x
  2. Step 2: Convert to fraction form
    256,625.88/384,914 = 79,085.20/x
  3. Step 3: Cross multiply
    256,625.88x = 384,914 × 79,085.20
  4. Step 4: Simplify right side
    256,625.88x = 30,441,000,672.80
  5. Step 5: Solve for x
    x = 30,441,000,672.80/256,625.88
  6. Step 6: Final answer
    x = 118,620.15

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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.