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Finding the Fourth Proportional to 448,361.12, 672,936.46 and 235,281.21

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Solution

The fourth proportional to 448,361.12, 672,936.46 and 235,281.21 is: 353,128.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,361.12 : 672,936.46 = 235,281.21 : x
  2. Step 2: Convert to fraction form
    448,361.12/672,936.46 = 235,281.21/x
  3. Step 3: Cross multiply
    448,361.12x = 672,936.46 × 235,281.21
  4. Step 4: Simplify right side
    448,361.12x = 158,329,301,450.20
  5. Step 5: Solve for x
    x = 158,329,301,450.20/448,361.12
  6. Step 6: Final answer
    x = 353,128.97

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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.