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Finding the Fourth Proportional to 253,230.68, 379,705.79 and 103,576.06

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Solution

The fourth proportional to 253,230.68, 379,705.79 and 103,576.06 is: 155,306.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,230.68 : 379,705.79 = 103,576.06 : x
  2. Step 2: Convert to fraction form
    253,230.68/379,705.79 = 103,576.06/x
  3. Step 3: Cross multiply
    253,230.68x = 379,705.79 × 103,576.06
  4. Step 4: Simplify right side
    253,230.68x = 39,328,430,420.96
  5. Step 5: Solve for x
    x = 39,328,430,420.96/253,230.68
  6. Step 6: Final answer
    x = 155,306.73

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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.