Home / 256,090.23-384,120.81-78,597

Finding the Fourth Proportional to 256,090.23, 384,120.81 and 78,597

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Solution

The fourth proportional to 256,090.23, 384,120.81 and 78,597 is: 117,891.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,090.23 : 384,120.81 = 78,597 : x
  2. Step 2: Convert to fraction form
    256,090.23/384,120.81 = 78,597/x
  3. Step 3: Cross multiply
    256,090.23x = 384,120.81 × 78,597
  4. Step 4: Simplify right side
    256,090.23x = 30,190,743,303.57
  5. Step 5: Solve for x
    x = 30,190,743,303.57/256,090.23
  6. Step 6: Final answer
    x = 117,891.04

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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.