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Finding the Fourth Proportional to 397,878.90, 596,824.56 and 221,506.89

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Solution

The fourth proportional to 397,878.90, 596,824.56 and 221,506.89 is: 332,263.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,878.90 : 596,824.56 = 221,506.89 : x
  2. Step 2: Convert to fraction form
    397,878.90/596,824.56 = 221,506.89/x
  3. Step 3: Cross multiply
    397,878.90x = 596,824.56 × 221,506.89
  4. Step 4: Simplify right side
    397,878.90x = 132,200,752,161.22
  5. Step 5: Solve for x
    x = 132,200,752,161.22/397,878.90
  6. Step 6: Final answer
    x = 332,263.79

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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.