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Finding the Fourth Proportional to 448,687.20, 672,885.12 and 149,087.32

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Solution

The fourth proportional to 448,687.20, 672,885.12 and 149,087.32 is: 223,582.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,687.20 : 672,885.12 = 149,087.32 : x
  2. Step 2: Convert to fraction form
    448,687.20/672,885.12 = 149,087.32/x
  3. Step 3: Cross multiply
    448,687.20x = 672,885.12 × 149,087.32
  4. Step 4: Simplify right side
    448,687.20x = 100,318,639,208.68
  5. Step 5: Solve for x
    x = 100,318,639,208.68/448,687.20
  6. Step 6: Final answer
    x = 223,582.57

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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.