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Finding the Fourth Proportional to 289,232.32, 398,860.20 and 225,546.88

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Solution

The fourth proportional to 289,232.32, 398,860.20 and 225,546.88 is: 311,036.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,232.32 : 398,860.20 = 225,546.88 : x
  2. Step 2: Convert to fraction form
    289,232.32/398,860.20 = 225,546.88/x
  3. Step 3: Cross multiply
    289,232.32x = 398,860.20 × 225,546.88
  4. Step 4: Simplify right side
    289,232.32x = 89,961,673,666.18
  5. Step 5: Solve for x
    x = 89,961,673,666.18/289,232.32
  6. Step 6: Final answer
    x = 311,036.03

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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.