Home / 213,621.88-320,625.42-113,865.16

Finding the Fourth Proportional to 213,621.88, 320,625.42 and 113,865.16

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Solution

The fourth proportional to 213,621.88, 320,625.42 and 113,865.16 is: 170,900.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,621.88 : 320,625.42 = 113,865.16 : x
  2. Step 2: Convert to fraction form
    213,621.88/320,625.42 = 113,865.16/x
  3. Step 3: Cross multiply
    213,621.88x = 320,625.42 × 113,865.16
  4. Step 4: Simplify right side
    213,621.88x = 36,508,064,748.37
  5. Step 5: Solve for x
    x = 36,508,064,748.37/213,621.88
  6. Step 6: Final answer
    x = 170,900.40

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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.