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Finding the Fourth Proportional to 448,399.80, 672,453.36 and 148,799.90

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Solution

The fourth proportional to 448,399.80, 672,453.36 and 148,799.90 is: 223,151.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,399.80 : 672,453.36 = 148,799.90 : x
  2. Step 2: Convert to fraction form
    448,399.80/672,453.36 = 148,799.90/x
  3. Step 3: Cross multiply
    448,399.80x = 672,453.36 × 148,799.90
  4. Step 4: Simplify right side
    448,399.80x = 100,060,994,403.80
  5. Step 5: Solve for x
    x = 100,060,994,403.80/448,399.80
  6. Step 6: Final answer
    x = 223,151.29

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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.