Home / 345,728.89-518,588.19-210,832.60

Finding the Fourth Proportional to 345,728.89, 518,588.19 and 210,832.60

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Solution

The fourth proportional to 345,728.89, 518,588.19 and 210,832.60 is: 316,245.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,728.89 : 518,588.19 = 210,832.60 : x
  2. Step 2: Convert to fraction form
    345,728.89/518,588.19 = 210,832.60/x
  3. Step 3: Cross multiply
    345,728.89x = 518,588.19 × 210,832.60
  4. Step 4: Simplify right side
    345,728.89x = 109,335,296,426.99
  5. Step 5: Solve for x
    x = 109,335,296,426.99/345,728.89
  6. Step 6: Final answer
    x = 316,245.76

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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.