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Finding the Fourth Proportional to 333,779.93, 500,669.78 and 221,679.02

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Solution

The fourth proportional to 333,779.93, 500,669.78 and 221,679.02 is: 332,518.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    333,779.93 : 500,669.78 = 221,679.02 : x
  2. Step 2: Convert to fraction form
    333,779.93/500,669.78 = 221,679.02/x
  3. Step 3: Cross multiply
    333,779.93x = 500,669.78 × 221,679.02
  4. Step 4: Simplify right side
    333,779.93x = 110,987,982,562.27
  5. Step 5: Solve for x
    x = 110,987,982,562.27/333,779.93
  6. Step 6: Final answer
    x = 332,518.45

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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.