Home / 380,621.12-525,274.22-210,844.31

Finding the Fourth Proportional to 380,621.12, 525,274.22 and 210,844.31

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Solution

The fourth proportional to 380,621.12, 525,274.22 and 210,844.31 is: 290,974.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,621.12 : 525,274.22 = 210,844.31 : x
  2. Step 2: Convert to fraction form
    380,621.12/525,274.22 = 210,844.31/x
  3. Step 3: Cross multiply
    380,621.12x = 525,274.22 × 210,844.31
  4. Step 4: Simplify right side
    380,621.12x = 110,751,078,377.43
  5. Step 5: Solve for x
    x = 110,751,078,377.43/380,621.12
  6. Step 6: Final answer
    x = 290,974.60

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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.