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Finding the Fourth Proportional to 333,881.40, 500,821.58 and 221,780.28

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Solution

The fourth proportional to 333,881.40, 500,821.58 and 221,780.28 is: 332,670.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    333,881.40 : 500,821.58 = 221,780.28 : x
  2. Step 2: Convert to fraction form
    333,881.40/500,821.58 = 221,780.28/x
  3. Step 3: Cross multiply
    333,881.40x = 500,821.58 × 221,780.28
  4. Step 4: Simplify right side
    333,881.40x = 111,072,350,242.44
  5. Step 5: Solve for x
    x = 111,072,350,242.44/333,881.40
  6. Step 6: Final answer
    x = 332,670.07

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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.