Home / 256,619.88-384,905.07-79,079.22

Finding the Fourth Proportional to 256,619.88, 384,905.07 and 79,079.22

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Solution

The fourth proportional to 256,619.88, 384,905.07 and 79,079.22 is: 118,611.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,619.88 : 384,905.07 = 79,079.22 : x
  2. Step 2: Convert to fraction form
    256,619.88/384,905.07 = 79,079.22/x
  3. Step 3: Cross multiply
    256,619.88x = 384,905.07 × 79,079.22
  4. Step 4: Simplify right side
    256,619.88x = 30,437,992,709.65
  5. Step 5: Solve for x
    x = 30,437,992,709.65/256,619.88
  6. Step 6: Final answer
    x = 118,611.20

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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.