Home / 256,621.36-384,907.27-79,080.70

Finding the Fourth Proportional to 256,621.36, 384,907.27 and 79,080.70

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Solution

The fourth proportional to 256,621.36, 384,907.27 and 79,080.70 is: 118,613.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,621.36 : 384,907.27 = 79,080.70 : x
  2. Step 2: Convert to fraction form
    256,621.36/384,907.27 = 79,080.70/x
  3. Step 3: Cross multiply
    256,621.36x = 384,907.27 × 79,080.70
  4. Step 4: Simplify right side
    256,621.36x = 30,438,736,346.69
  5. Step 5: Solve for x
    x = 30,438,736,346.69/256,621.36
  6. Step 6: Final answer
    x = 118,613.42

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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.