Home / 385,119.58-531,449.44-210,686.97

Finding the Fourth Proportional to 385,119.58, 531,449.44 and 210,686.97

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Solution

The fourth proportional to 385,119.58, 531,449.44 and 210,686.97 is: 290,739.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,119.58 : 531,449.44 = 210,686.97 : x
  2. Step 2: Convert to fraction form
    385,119.58/531,449.44 = 210,686.97/x
  3. Step 3: Cross multiply
    385,119.58x = 531,449.44 × 210,686.97
  4. Step 4: Simplify right side
    385,119.58x = 111,969,471,168.36
  5. Step 5: Solve for x
    x = 111,969,471,168.36/385,119.58
  6. Step 6: Final answer
    x = 290,739.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.