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Finding the Fourth Proportional to 448,523.28, 672,803.28 and 208,860.48

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Solution

The fourth proportional to 448,523.28, 672,803.28 and 208,860.48 is: 313,299.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,523.28 : 672,803.28 = 208,860.48 : x
  2. Step 2: Convert to fraction form
    448,523.28/672,803.28 = 208,860.48/x
  3. Step 3: Cross multiply
    448,523.28x = 672,803.28 × 208,860.48
  4. Step 4: Simplify right side
    448,523.28x = 140,522,016,006.37
  5. Step 5: Solve for x
    x = 140,522,016,006.37/448,523.28
  6. Step 6: Final answer
    x = 313,299.27

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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.