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Finding the Fourth Proportional to 620,986.23, 930,918.15 and 221,532.03

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Solution

The fourth proportional to 620,986.23, 930,918.15 and 221,532.03 is: 332,097.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,986.23 : 930,918.15 = 221,532.03 : x
  2. Step 2: Convert to fraction form
    620,986.23/930,918.15 = 221,532.03/x
  3. Step 3: Cross multiply
    620,986.23x = 930,918.15 × 221,532.03
  4. Step 4: Simplify right side
    620,986.23x = 206,228,187,533.35
  5. Step 5: Solve for x
    x = 206,228,187,533.35/620,986.23
  6. Step 6: Final answer
    x = 332,097.84

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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.