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Finding the Fourth Proportional to 207,188.64, 310,736.88 and 80,832.24

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Solution

The fourth proportional to 207,188.64, 310,736.88 and 80,832.24 is: 121,230.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,188.64 : 310,736.88 = 80,832.24 : x
  2. Step 2: Convert to fraction form
    207,188.64/310,736.88 = 80,832.24/x
  3. Step 3: Cross multiply
    207,188.64x = 310,736.88 × 80,832.24
  4. Step 4: Simplify right side
    207,188.64x = 25,117,558,061.01
  5. Step 5: Solve for x
    x = 25,117,558,061.01/207,188.64
  6. Step 6: Final answer
    x = 121,230.38

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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.