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Finding the Fourth Proportional to 620,537.72, 930,576.67 and 221,072.45

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Solution

The fourth proportional to 620,537.72, 930,576.67 and 221,072.45 is: 331,526.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,537.72 : 930,576.67 = 221,072.45 : x
  2. Step 2: Convert to fraction form
    620,537.72/930,576.67 = 221,072.45/x
  3. Step 3: Cross multiply
    620,537.72x = 930,576.67 × 221,072.45
  4. Step 4: Simplify right side
    620,537.72x = 205,724,859,144.18
  5. Step 5: Solve for x
    x = 205,724,859,144.18/620,537.72
  6. Step 6: Final answer
    x = 331,526.76

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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.